From 2d401c651b93cf193cf5f0960a8878789f3cbb9b Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Thu, 19 Dec 2019 19:45:50 +0900
Subject: [PATCH 01/39] Add a test for ABC129-F

---
 examples/abc129-f.rs                          | 132 ++++++++++++++++++
 examples/tests.ron                            |   4 +
 examples/testsets/abc129-f/in/sample_01.txt   |   1 +
 examples/testsets/abc129-f/in/sample_02.txt   |   1 +
 examples/testsets/abc129-f/in/sample_03.txt   |   1 +
 .../testsets/abc129-f/in/sub1_killer_01.txt   |   1 +
 .../testsets/abc129-f/in/sub1_killer_02.txt   |   1 +
 .../testsets/abc129-f/in/sub1_killer_03.txt   |   1 +
 .../testsets/abc129-f/in/sub1_killer_04.txt   |   1 +
 .../testsets/abc129-f/in/sub1_killer_05.txt   |   1 +
 .../testsets/abc129-f/in/sub1_killer_06.txt   |   1 +
 .../testsets/abc129-f/in/sub1_killer_07.txt   |   1 +
 .../testsets/abc129-f/in/sub1_large_01.txt    |   1 +
 .../testsets/abc129-f/in/sub1_large_02.txt    |   1 +
 .../testsets/abc129-f/in/sub1_large_03.txt    |   1 +
 .../testsets/abc129-f/in/sub1_large_04.txt    |   1 +
 .../testsets/abc129-f/in/sub1_large_05.txt    |   1 +
 .../testsets/abc129-f/in/sub1_large_06.txt    |   1 +
 .../testsets/abc129-f/in/sub1_large_07.txt    |   1 +
 .../testsets/abc129-f/in/sub1_large_08.txt    |   1 +
 .../testsets/abc129-f/in/sub1_large_09.txt    |   1 +
 .../testsets/abc129-f/in/sub1_rand_01.txt     |   1 +
 .../testsets/abc129-f/in/sub1_rand_02.txt     |   1 +
 .../testsets/abc129-f/in/sub1_rand_03.txt     |   1 +
 .../testsets/abc129-f/in/sub1_rand_04.txt     |   1 +
 .../testsets/abc129-f/in/sub1_rand_05.txt     |   1 +
 .../testsets/abc129-f/in/sub1_rand_06.txt     |   1 +
 .../testsets/abc129-f/in/sub1_rand_07.txt     |   1 +
 .../testsets/abc129-f/in/sub1_rand_08.txt     |   1 +
 .../testsets/abc129-f/in/sub1_rand_09.txt     |   1 +
 .../testsets/abc129-f/in/sub1_rand_10.txt     |   1 +
 .../testsets/abc129-f/in/sub1_small_01.txt    |   1 +
 .../testsets/abc129-f/in/sub1_small_02.txt    |   1 +
 .../testsets/abc129-f/in/sub1_small_03.txt    |   1 +
 .../testsets/abc129-f/in/sub1_small_04.txt    |   1 +
 .../testsets/abc129-f/in/sub1_small_05.txt    |   1 +
 .../testsets/abc129-f/in/sub1_small_06.txt    |   1 +
 examples/testsets/abc129-f/out/sample_01.txt  |   1 +
 examples/testsets/abc129-f/out/sample_02.txt  |   1 +
 examples/testsets/abc129-f/out/sample_03.txt  |   1 +
 .../testsets/abc129-f/out/sub1_killer_01.txt  |   1 +
 .../testsets/abc129-f/out/sub1_killer_02.txt  |   1 +
 .../testsets/abc129-f/out/sub1_killer_03.txt  |   1 +
 .../testsets/abc129-f/out/sub1_killer_04.txt  |   1 +
 .../testsets/abc129-f/out/sub1_killer_05.txt  |   1 +
 .../testsets/abc129-f/out/sub1_killer_06.txt  |   1 +
 .../testsets/abc129-f/out/sub1_killer_07.txt  |   1 +
 .../testsets/abc129-f/out/sub1_large_01.txt   |   1 +
 .../testsets/abc129-f/out/sub1_large_02.txt   |   1 +
 .../testsets/abc129-f/out/sub1_large_03.txt   |   1 +
 .../testsets/abc129-f/out/sub1_large_04.txt   |   1 +
 .../testsets/abc129-f/out/sub1_large_05.txt   |   1 +
 .../testsets/abc129-f/out/sub1_large_06.txt   |   1 +
 .../testsets/abc129-f/out/sub1_large_07.txt   |   1 +
 .../testsets/abc129-f/out/sub1_large_08.txt   |   1 +
 .../testsets/abc129-f/out/sub1_large_09.txt   |   1 +
 .../testsets/abc129-f/out/sub1_rand_01.txt    |   1 +
 .../testsets/abc129-f/out/sub1_rand_02.txt    |   1 +
 .../testsets/abc129-f/out/sub1_rand_03.txt    |   1 +
 .../testsets/abc129-f/out/sub1_rand_04.txt    |   1 +
 .../testsets/abc129-f/out/sub1_rand_05.txt    |   1 +
 .../testsets/abc129-f/out/sub1_rand_06.txt    |   1 +
 .../testsets/abc129-f/out/sub1_rand_07.txt    |   1 +
 .../testsets/abc129-f/out/sub1_rand_08.txt    |   1 +
 .../testsets/abc129-f/out/sub1_rand_09.txt    |   1 +
 .../testsets/abc129-f/out/sub1_rand_10.txt    |   1 +
 .../testsets/abc129-f/out/sub1_small_01.txt   |   1 +
 .../testsets/abc129-f/out/sub1_small_02.txt   |   1 +
 .../testsets/abc129-f/out/sub1_small_03.txt   |   1 +
 .../testsets/abc129-f/out/sub1_small_04.txt   |   1 +
 .../testsets/abc129-f/out/sub1_small_05.txt   |   1 +
 .../testsets/abc129-f/out/sub1_small_06.txt   |   1 +
 72 files changed, 206 insertions(+)
 create mode 100644 examples/abc129-f.rs
 create mode 100644 examples/testsets/abc129-f/in/sample_01.txt
 create mode 100644 examples/testsets/abc129-f/in/sample_02.txt
 create mode 100644 examples/testsets/abc129-f/in/sample_03.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_killer_01.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_killer_02.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_killer_03.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_killer_04.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_killer_05.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_killer_06.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_killer_07.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_large_01.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_large_02.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_large_03.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_large_04.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_large_05.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_large_06.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_large_07.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_large_08.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_large_09.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_01.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_02.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_03.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_04.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_05.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_06.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_07.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_08.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_09.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_rand_10.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_small_01.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_small_02.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_small_03.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_small_04.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_small_05.txt
 create mode 100644 examples/testsets/abc129-f/in/sub1_small_06.txt
 create mode 100644 examples/testsets/abc129-f/out/sample_01.txt
 create mode 100644 examples/testsets/abc129-f/out/sample_02.txt
 create mode 100644 examples/testsets/abc129-f/out/sample_03.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_killer_01.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_killer_02.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_killer_03.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_killer_04.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_killer_05.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_killer_06.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_killer_07.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_large_01.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_large_02.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_large_03.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_large_04.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_large_05.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_large_06.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_large_07.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_large_08.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_large_09.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_01.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_02.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_03.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_04.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_05.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_06.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_07.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_08.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_09.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_rand_10.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_small_01.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_small_02.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_small_03.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_small_04.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_small_05.txt
 create mode 100644 examples/testsets/abc129-f/out/sub1_small_06.txt

diff --git a/examples/abc129-f.rs b/examples/abc129-f.rs
new file mode 100644
index 0000000..019849a
--- /dev/null
+++ b/examples/abc129-f.rs
@@ -0,0 +1,132 @@
+// https://atcoder.jp/contests/abc129/tasks/abc129_f
+
+use derive_more::Display;
+use ndarray::{array, Array2, LinalgScalar};
+use num::{PrimInt, Unsigned};
+use num_derive::{One, Zero};
+
+use std::cell::Cell;
+use std::cmp;
+use std::ops::{Add, Div, Mul, Sub};
+
+fn main() {
+    // use std::io::{self, Read as _};
+    //
+    // let mut input = "".to_owned();
+    // io::stdin().read_to_string(&mut input).unwrap();
+    // let mut input = input.split_whitespace();
+    // macro_rules! read {
+    //     ([$t:tt; $n:expr]) => {
+    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
+    //     };
+    //     (($($t:tt),+)) => {
+    //         ($(read!($t)),*)
+    //     };
+    //     (_1based) => {
+    //         read!(usize) - 1
+    //     };
+    //     (_bytes) => {
+    //         read!(String).into_bytes()
+    //     };
+    //     ($ty:ty) => {
+    //         input.next().unwrap().parse::<$ty>().unwrap()
+    //     };
+    // }
+    //
+    // let (l, a, b, m) = read!((u64, u64, u64, u64));
+
+    use proconio::input;
+
+    input! {
+        l: u64,
+        a: u64,
+        b: u64,
+        m: u64,
+    }
+
+    MOD.with(|cell| cell.set(m));
+
+    let count = |d| -> _ {
+        let count = |sup: u64| cmp::min(sup.saturating_sub(a + 1) / b + u64::from(b < sup), l);
+        count(10u64.pow(d)) - count(10u64.pow(d - 1))
+    };
+
+    let ans = (1..=18).fold(array![[Z(0), Z::checked(a), Z(1)]], |acc, d| {
+        acc.dot(
+            &array![
+                [Z::checked(10u64.pow(d)), Z(0), Z(0)],
+                [Z(1), Z(1), Z(0)],
+                [Z(0), Z::checked(b), Z(1)],
+            ]
+            .matrix_power(count(d)),
+        )
+    })[(0, 0)];
+    println!("{}", ans);
+}
+
+trait Array2Ext {
+    fn matrix_power<E: PrimInt + Unsigned>(&self, exp: E) -> Self;
+}
+
+impl<S: LinalgScalar> Array2Ext for Array2<S> {
+    fn matrix_power<E: PrimInt + Unsigned>(&self, exp: E) -> Self {
+        let (mut base, mut exp, mut acc) = (self.clone(), exp, Self::eye(self.nrows()));
+        while exp > E::zero() {
+            if (exp & E::one()) == E::one() {
+                acc = acc.dot(&base);
+            }
+            exp = exp / (E::one() + E::one());
+            base = base.dot(&base);
+        }
+        acc
+    }
+}
+
+thread_local! {
+    static MOD: Cell<u64> = Cell::new(0);
+}
+
+#[derive(Zero, One, Display, Debug, Clone, Copy)]
+struct Z(u64);
+
+impl Z {
+    fn checked(mut val: u64) -> Self {
+        let modulus = MOD.with(Cell::get);
+        if val >= modulus {
+            val %= modulus;
+        }
+        Self(val)
+    }
+}
+
+impl Add for Z {
+    type Output = Self;
+
+    fn add(self, rhs: Self) -> Self {
+        Self::checked(self.0 + rhs.0)
+    }
+}
+
+impl Sub for Z {
+    type Output = Self;
+
+    fn sub(self, _: Self) -> Self {
+        unreachable!("should not be performed")
+    }
+}
+
+impl Mul for Z {
+    type Output = Self;
+
+    fn mul(self, rhs: Self) -> Self {
+        Self::checked(self.0 * rhs.0)
+    }
+}
+
+impl Div for Z {
+    type Output = Self;
+
+    fn div(self, _: Self) -> Self {
+        unreachable!("should not be performed")
+    }
+}
diff --git a/examples/tests.ron b/examples/tests.ron
index c96e7e5..49b4f7a 100644
--- a/examples/tests.ron
+++ b/examples/tests.ron
@@ -43,6 +43,10 @@
             name: "ABC120: D - Decayed Bridges",
             matching: ExactWords,
         ),
+        "abc129-f": (
+            name: "ABC129: F - Takahashi's Basics in Education and Learning",
+            matching: ExactWords,
+        ),
         "abc142-d": (
             name: "ABC124: D - Disjoint Set of Common Divisors",
             matching: ExactWords,
diff --git a/examples/testsets/abc129-f/in/sample_01.txt b/examples/testsets/abc129-f/in/sample_01.txt
new file mode 100644
index 0000000..42e1211
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sample_01.txt
@@ -0,0 +1 @@
+5 3 4 10007
diff --git a/examples/testsets/abc129-f/in/sample_02.txt b/examples/testsets/abc129-f/in/sample_02.txt
new file mode 100644
index 0000000..969f9fc
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sample_02.txt
@@ -0,0 +1 @@
+4 8 1 1000000
diff --git a/examples/testsets/abc129-f/in/sample_03.txt b/examples/testsets/abc129-f/in/sample_03.txt
new file mode 100644
index 0000000..7cb7ba4
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sample_03.txt
@@ -0,0 +1 @@
+107 10000000000007 1000000000000007 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_killer_01.txt b/examples/testsets/abc129-f/in/sub1_killer_01.txt
new file mode 100644
index 0000000..cb59cb9
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_killer_01.txt
@@ -0,0 +1 @@
+2500000000000 4 4 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_killer_02.txt b/examples/testsets/abc129-f/in/sub1_killer_02.txt
new file mode 100644
index 0000000..b1582fc
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_killer_02.txt
@@ -0,0 +1 @@
+99982444353 100 4 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_killer_03.txt b/examples/testsets/abc129-f/in/sub1_killer_03.txt
new file mode 100644
index 0000000..8067387
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_killer_03.txt
@@ -0,0 +1 @@
+333333333333333333 3 3 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_killer_04.txt b/examples/testsets/abc129-f/in/sub1_killer_04.txt
new file mode 100644
index 0000000..caf49ce
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_killer_04.txt
@@ -0,0 +1 @@
+1 999999999999999999 999999999999999999 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_killer_05.txt b/examples/testsets/abc129-f/in/sub1_killer_05.txt
new file mode 100644
index 0000000..8dad240
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_killer_05.txt
@@ -0,0 +1 @@
+998244353 629149506971940504 319836804 14876851
diff --git a/examples/testsets/abc129-f/in/sub1_killer_06.txt b/examples/testsets/abc129-f/in/sub1_killer_06.txt
new file mode 100644
index 0000000..ee45d99
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_killer_06.txt
@@ -0,0 +1 @@
+999918203 4248 723308865 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_killer_07.txt b/examples/testsets/abc129-f/in/sub1_killer_07.txt
new file mode 100644
index 0000000..7c691d6
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_killer_07.txt
@@ -0,0 +1 @@
+100000000000 6 231 25200
diff --git a/examples/testsets/abc129-f/in/sub1_large_01.txt b/examples/testsets/abc129-f/in/sub1_large_01.txt
new file mode 100644
index 0000000..1bf1e1b
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_large_01.txt
@@ -0,0 +1 @@
+999999999999999999 1 1 1000000000
diff --git a/examples/testsets/abc129-f/in/sub1_large_02.txt b/examples/testsets/abc129-f/in/sub1_large_02.txt
new file mode 100644
index 0000000..09de7a1
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_large_02.txt
@@ -0,0 +1 @@
+11837588 221218607 84473754642 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_large_03.txt b/examples/testsets/abc129-f/in/sub1_large_03.txt
new file mode 100644
index 0000000..9d8ee74
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_large_03.txt
@@ -0,0 +1 @@
+81074056293 7047569542 12261087 29999997
diff --git a/examples/testsets/abc129-f/in/sub1_large_04.txt b/examples/testsets/abc129-f/in/sub1_large_04.txt
new file mode 100644
index 0000000..b484c04
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_large_04.txt
@@ -0,0 +1 @@
+999999999999999999 1 1 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_large_05.txt b/examples/testsets/abc129-f/in/sub1_large_05.txt
new file mode 100644
index 0000000..98320ad
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_large_05.txt
@@ -0,0 +1 @@
+328613923524538 40980 3031 999999999
diff --git a/examples/testsets/abc129-f/in/sub1_large_06.txt b/examples/testsets/abc129-f/in/sub1_large_06.txt
new file mode 100644
index 0000000..111af0c
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_large_06.txt
@@ -0,0 +1 @@
+10914883567412 1570 62840 99999999
diff --git a/examples/testsets/abc129-f/in/sub1_large_07.txt b/examples/testsets/abc129-f/in/sub1_large_07.txt
new file mode 100644
index 0000000..502b824
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_large_07.txt
@@ -0,0 +1 @@
+1448057007031098 11 690 881005587
diff --git a/examples/testsets/abc129-f/in/sub1_large_08.txt b/examples/testsets/abc129-f/in/sub1_large_08.txt
new file mode 100644
index 0000000..e3210cc
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_large_08.txt
@@ -0,0 +1 @@
+74358445905354 29310 13448 147413419
diff --git a/examples/testsets/abc129-f/in/sub1_large_09.txt b/examples/testsets/abc129-f/in/sub1_large_09.txt
new file mode 100644
index 0000000..953a3a1
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_large_09.txt
@@ -0,0 +1 @@
+120900801167206 994 8061 387420489
diff --git a/examples/testsets/abc129-f/in/sub1_rand_01.txt b/examples/testsets/abc129-f/in/sub1_rand_01.txt
new file mode 100644
index 0000000..bf29c51
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_01.txt
@@ -0,0 +1 @@
+1380800559 8 721124722 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_rand_02.txt b/examples/testsets/abc129-f/in/sub1_rand_02.txt
new file mode 100644
index 0000000..ce81814
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_02.txt
@@ -0,0 +1 @@
+105301221317 8 9457145 999999999
diff --git a/examples/testsets/abc129-f/in/sub1_rand_03.txt b/examples/testsets/abc129-f/in/sub1_rand_03.txt
new file mode 100644
index 0000000..a115e1e
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_03.txt
@@ -0,0 +1 @@
+53562851 12672052437647 18553359394 99999999
diff --git a/examples/testsets/abc129-f/in/sub1_rand_04.txt b/examples/testsets/abc129-f/in/sub1_rand_04.txt
new file mode 100644
index 0000000..74d7f96
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_04.txt
@@ -0,0 +1 @@
+7343 44375369427231 136194167038156 841293953
diff --git a/examples/testsets/abc129-f/in/sub1_rand_05.txt b/examples/testsets/abc129-f/in/sub1_rand_05.txt
new file mode 100644
index 0000000..ec7780e
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_05.txt
@@ -0,0 +1 @@
+234481 8715183188079 4262710627175 9999999
diff --git a/examples/testsets/abc129-f/in/sub1_rand_06.txt b/examples/testsets/abc129-f/in/sub1_rand_06.txt
new file mode 100644
index 0000000..96df56c
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_06.txt
@@ -0,0 +1 @@
+335 2647488178484 2976541338296614 999918169
diff --git a/examples/testsets/abc129-f/in/sub1_rand_07.txt b/examples/testsets/abc129-f/in/sub1_rand_07.txt
new file mode 100644
index 0000000..c352840
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_07.txt
@@ -0,0 +1 @@
+2508131942730888 5 397 387420489
diff --git a/examples/testsets/abc129-f/in/sub1_rand_08.txt b/examples/testsets/abc129-f/in/sub1_rand_08.txt
new file mode 100644
index 0000000..f2eebd5
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_08.txt
@@ -0,0 +1 @@
+151407055 44693807224027 6603923461 1000000000
diff --git a/examples/testsets/abc129-f/in/sub1_rand_09.txt b/examples/testsets/abc129-f/in/sub1_rand_09.txt
new file mode 100644
index 0000000..baf9c53
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_09.txt
@@ -0,0 +1 @@
+17544042820 3 56987735 387420489
diff --git a/examples/testsets/abc129-f/in/sub1_rand_10.txt b/examples/testsets/abc129-f/in/sub1_rand_10.txt
new file mode 100644
index 0000000..ba0c84d
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_rand_10.txt
@@ -0,0 +1 @@
+355391 6022223566881 25138147452 999958020
diff --git a/examples/testsets/abc129-f/in/sub1_small_01.txt b/examples/testsets/abc129-f/in/sub1_small_01.txt
new file mode 100644
index 0000000..4cddd91
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_small_01.txt
@@ -0,0 +1 @@
+18 912087068546306627 3164574410046630 996674566
diff --git a/examples/testsets/abc129-f/in/sub1_small_02.txt b/examples/testsets/abc129-f/in/sub1_small_02.txt
new file mode 100644
index 0000000..00b538c
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_small_02.txt
@@ -0,0 +1 @@
+31940 139378099479290043 26943708742238 1000000000
diff --git a/examples/testsets/abc129-f/in/sub1_small_03.txt b/examples/testsets/abc129-f/in/sub1_small_03.txt
new file mode 100644
index 0000000..133c54d
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_small_03.txt
@@ -0,0 +1 @@
+345 493299812499659259 1418510335032035 998244353
diff --git a/examples/testsets/abc129-f/in/sub1_small_04.txt b/examples/testsets/abc129-f/in/sub1_small_04.txt
new file mode 100644
index 0000000..6daed7f
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_small_04.txt
@@ -0,0 +1 @@
+3776 494095262613235502 19199433662734 999999
diff --git a/examples/testsets/abc129-f/in/sub1_small_05.txt b/examples/testsets/abc129-f/in/sub1_small_05.txt
new file mode 100644
index 0000000..3b1845d
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_small_05.txt
@@ -0,0 +1 @@
+461491 67429808854595636 2017247872269 276712227
diff --git a/examples/testsets/abc129-f/in/sub1_small_06.txt b/examples/testsets/abc129-f/in/sub1_small_06.txt
new file mode 100644
index 0000000..f52b3dd
--- /dev/null
+++ b/examples/testsets/abc129-f/in/sub1_small_06.txt
@@ -0,0 +1 @@
+147 4222724580641548 6588820255446743 982883281
diff --git a/examples/testsets/abc129-f/out/sample_01.txt b/examples/testsets/abc129-f/out/sample_01.txt
new file mode 100644
index 0000000..f3e5209
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sample_01.txt
@@ -0,0 +1 @@
+5563
diff --git a/examples/testsets/abc129-f/out/sample_02.txt b/examples/testsets/abc129-f/out/sample_02.txt
new file mode 100644
index 0000000..ebe706b
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sample_02.txt
@@ -0,0 +1 @@
+891011
diff --git a/examples/testsets/abc129-f/out/sample_03.txt b/examples/testsets/abc129-f/out/sample_03.txt
new file mode 100644
index 0000000..d7e18ae
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sample_03.txt
@@ -0,0 +1 @@
+39122908
diff --git a/examples/testsets/abc129-f/out/sub1_killer_01.txt b/examples/testsets/abc129-f/out/sub1_killer_01.txt
new file mode 100644
index 0000000..10b65f2
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_killer_01.txt
@@ -0,0 +1 @@
+900161126
diff --git a/examples/testsets/abc129-f/out/sub1_killer_02.txt b/examples/testsets/abc129-f/out/sub1_killer_02.txt
new file mode 100644
index 0000000..a851e0c
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_killer_02.txt
@@ -0,0 +1 @@
+658481246
diff --git a/examples/testsets/abc129-f/out/sub1_killer_03.txt b/examples/testsets/abc129-f/out/sub1_killer_03.txt
new file mode 100644
index 0000000..43cff07
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_killer_03.txt
@@ -0,0 +1 @@
+521296277
diff --git a/examples/testsets/abc129-f/out/sub1_killer_04.txt b/examples/testsets/abc129-f/out/sub1_killer_04.txt
new file mode 100644
index 0000000..1c41192
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_killer_04.txt
@@ -0,0 +1 @@
+716070897
diff --git a/examples/testsets/abc129-f/out/sub1_killer_05.txt b/examples/testsets/abc129-f/out/sub1_killer_05.txt
new file mode 100644
index 0000000..f8a402d
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_killer_05.txt
@@ -0,0 +1 @@
+9086340
diff --git a/examples/testsets/abc129-f/out/sub1_killer_06.txt b/examples/testsets/abc129-f/out/sub1_killer_06.txt
new file mode 100644
index 0000000..2e84594
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_killer_06.txt
@@ -0,0 +1 @@
+822961451
diff --git a/examples/testsets/abc129-f/out/sub1_killer_07.txt b/examples/testsets/abc129-f/out/sub1_killer_07.txt
new file mode 100644
index 0000000..56b4803
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_killer_07.txt
@@ -0,0 +1 @@
+12975
diff --git a/examples/testsets/abc129-f/out/sub1_large_01.txt b/examples/testsets/abc129-f/out/sub1_large_01.txt
new file mode 100644
index 0000000..28e56d9
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_large_01.txt
@@ -0,0 +1 @@
+999999999
diff --git a/examples/testsets/abc129-f/out/sub1_large_02.txt b/examples/testsets/abc129-f/out/sub1_large_02.txt
new file mode 100644
index 0000000..7a2f4fe
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_large_02.txt
@@ -0,0 +1 @@
+739823859
diff --git a/examples/testsets/abc129-f/out/sub1_large_03.txt b/examples/testsets/abc129-f/out/sub1_large_03.txt
new file mode 100644
index 0000000..6f3846a
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_large_03.txt
@@ -0,0 +1 @@
+7215183
diff --git a/examples/testsets/abc129-f/out/sub1_large_04.txt b/examples/testsets/abc129-f/out/sub1_large_04.txt
new file mode 100644
index 0000000..7d3d74f
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_large_04.txt
@@ -0,0 +1 @@
+795127085
diff --git a/examples/testsets/abc129-f/out/sub1_large_05.txt b/examples/testsets/abc129-f/out/sub1_large_05.txt
new file mode 100644
index 0000000..ad676a4
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_large_05.txt
@@ -0,0 +1 @@
+222138048
diff --git a/examples/testsets/abc129-f/out/sub1_large_06.txt b/examples/testsets/abc129-f/out/sub1_large_06.txt
new file mode 100644
index 0000000..a6bb95b
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_large_06.txt
@@ -0,0 +1 @@
+96844045
diff --git a/examples/testsets/abc129-f/out/sub1_large_07.txt b/examples/testsets/abc129-f/out/sub1_large_07.txt
new file mode 100644
index 0000000..4f87764
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_large_07.txt
@@ -0,0 +1 @@
+257000862
diff --git a/examples/testsets/abc129-f/out/sub1_large_08.txt b/examples/testsets/abc129-f/out/sub1_large_08.txt
new file mode 100644
index 0000000..5c43ef6
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_large_08.txt
@@ -0,0 +1 @@
+55813670
diff --git a/examples/testsets/abc129-f/out/sub1_large_09.txt b/examples/testsets/abc129-f/out/sub1_large_09.txt
new file mode 100644
index 0000000..a714ffb
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_large_09.txt
@@ -0,0 +1 @@
+109152748
diff --git a/examples/testsets/abc129-f/out/sub1_rand_01.txt b/examples/testsets/abc129-f/out/sub1_rand_01.txt
new file mode 100644
index 0000000..47237fc
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_01.txt
@@ -0,0 +1 @@
+932512687
diff --git a/examples/testsets/abc129-f/out/sub1_rand_02.txt b/examples/testsets/abc129-f/out/sub1_rand_02.txt
new file mode 100644
index 0000000..3569ef6
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_02.txt
@@ -0,0 +1 @@
+976788549
diff --git a/examples/testsets/abc129-f/out/sub1_rand_03.txt b/examples/testsets/abc129-f/out/sub1_rand_03.txt
new file mode 100644
index 0000000..446994c
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_03.txt
@@ -0,0 +1 @@
+84300371
diff --git a/examples/testsets/abc129-f/out/sub1_rand_04.txt b/examples/testsets/abc129-f/out/sub1_rand_04.txt
new file mode 100644
index 0000000..930a068
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_04.txt
@@ -0,0 +1 @@
+336830166
diff --git a/examples/testsets/abc129-f/out/sub1_rand_05.txt b/examples/testsets/abc129-f/out/sub1_rand_05.txt
new file mode 100644
index 0000000..f98cf2c
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_05.txt
@@ -0,0 +1 @@
+699837
diff --git a/examples/testsets/abc129-f/out/sub1_rand_06.txt b/examples/testsets/abc129-f/out/sub1_rand_06.txt
new file mode 100644
index 0000000..123565f
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_06.txt
@@ -0,0 +1 @@
+184277614
diff --git a/examples/testsets/abc129-f/out/sub1_rand_07.txt b/examples/testsets/abc129-f/out/sub1_rand_07.txt
new file mode 100644
index 0000000..7fe4b6d
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_07.txt
@@ -0,0 +1 @@
+357790932
diff --git a/examples/testsets/abc129-f/out/sub1_rand_08.txt b/examples/testsets/abc129-f/out/sub1_rand_08.txt
new file mode 100644
index 0000000..7f65140
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_08.txt
@@ -0,0 +1 @@
+878717921
diff --git a/examples/testsets/abc129-f/out/sub1_rand_09.txt b/examples/testsets/abc129-f/out/sub1_rand_09.txt
new file mode 100644
index 0000000..38ba959
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_09.txt
@@ -0,0 +1 @@
+207193062
diff --git a/examples/testsets/abc129-f/out/sub1_rand_10.txt b/examples/testsets/abc129-f/out/sub1_rand_10.txt
new file mode 100644
index 0000000..8773a4d
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_rand_10.txt
@@ -0,0 +1 @@
+336284961
diff --git a/examples/testsets/abc129-f/out/sub1_small_01.txt b/examples/testsets/abc129-f/out/sub1_small_01.txt
new file mode 100644
index 0000000..9906162
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_small_01.txt
@@ -0,0 +1 @@
+564963471
diff --git a/examples/testsets/abc129-f/out/sub1_small_02.txt b/examples/testsets/abc129-f/out/sub1_small_02.txt
new file mode 100644
index 0000000..8242c5e
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_small_02.txt
@@ -0,0 +1 @@
+997629525
diff --git a/examples/testsets/abc129-f/out/sub1_small_03.txt b/examples/testsets/abc129-f/out/sub1_small_03.txt
new file mode 100644
index 0000000..d0ba21a
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_small_03.txt
@@ -0,0 +1 @@
+390889114
diff --git a/examples/testsets/abc129-f/out/sub1_small_04.txt b/examples/testsets/abc129-f/out/sub1_small_04.txt
new file mode 100644
index 0000000..36aaed9
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_small_04.txt
@@ -0,0 +1 @@
+792884
diff --git a/examples/testsets/abc129-f/out/sub1_small_05.txt b/examples/testsets/abc129-f/out/sub1_small_05.txt
new file mode 100644
index 0000000..93f44a4
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_small_05.txt
@@ -0,0 +1 @@
+203043563
diff --git a/examples/testsets/abc129-f/out/sub1_small_06.txt b/examples/testsets/abc129-f/out/sub1_small_06.txt
new file mode 100644
index 0000000..f472c41
--- /dev/null
+++ b/examples/testsets/abc129-f/out/sub1_small_06.txt
@@ -0,0 +1 @@
+887967106

From 5b356b2a3c2711c49a19a096dbf1a28f3d72b773 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Thu, 19 Dec 2019 20:40:01 +0900
Subject: [PATCH 02/39] Add a test for ABC077/ARC084-C

---
 examples/arc084-c.rs                  | 48 +++++++++++++++++++++++++++
 examples/tests.ron                    |  4 +++
 examples/testsets/arc084-c/in/s1.txt  |  4 +++
 examples/testsets/arc084-c/in/s2.txt  |  4 +++
 examples/testsets/arc084-c/in/s3.txt  |  4 +++
 examples/testsets/arc084-c/out/s1.txt |  1 +
 examples/testsets/arc084-c/out/s2.txt |  1 +
 examples/testsets/arc084-c/out/s3.txt |  1 +
 8 files changed, 67 insertions(+)
 create mode 100644 examples/arc084-c.rs
 create mode 100644 examples/testsets/arc084-c/in/s1.txt
 create mode 100644 examples/testsets/arc084-c/in/s2.txt
 create mode 100644 examples/testsets/arc084-c/in/s3.txt
 create mode 100644 examples/testsets/arc084-c/out/s1.txt
 create mode 100644 examples/testsets/arc084-c/out/s2.txt
 create mode 100644 examples/testsets/arc084-c/out/s3.txt

diff --git a/examples/arc084-c.rs b/examples/arc084-c.rs
new file mode 100644
index 0000000..dee0b17
--- /dev/null
+++ b/examples/arc084-c.rs
@@ -0,0 +1,48 @@
+// https://atcoder.jp/contests/arc084/tasks/arc084_a
+
+use superslice::Ext as _;
+
+fn main() {
+    // use std::io::{self, Read as _};
+    //
+    // let mut input = "".to_owned();
+    // io::stdin().read_to_string(&mut input).unwrap();
+    // let mut input = input.split_whitespace();
+    // macro_rules! read {
+    //     ([$t:tt; $n:expr]) => {
+    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
+    //     };
+    //     (($($t:tt),+)) => {
+    //         ($(read!($t)),*)
+    //     };
+    //     (_1based) => {
+    //         read!(usize) - 1
+    //     };
+    //     (_bytes) => {
+    //         read!(String).into_bytes()
+    //     };
+    //     ($ty:ty) => {
+    //         input.next().unwrap().parse::<$ty>().unwrap()
+    //     };
+    // }
+    //
+    // let n = read!(n);
+    // let (mut a, b, mut c) = read!(([u32; n], [u32; n], [u32; n]));
+
+    use proconio::input;
+
+    input! {
+        n: usize,
+        mut a: [u32; n],
+        b: [u32; n],
+        mut c: [u32; n],
+    }
+
+    a.sort();
+    c.sort();
+    let ans = b
+        .into_iter()
+        .map(|b| a.lower_bound(&b) * (n - c.upper_bound(&b)))
+        .sum::<usize>();
+    println!("{}", ans);
+}
diff --git a/examples/tests.ron b/examples/tests.ron
index 49b4f7a..fac6f38 100644
--- a/examples/tests.ron
+++ b/examples/tests.ron
@@ -35,6 +35,10 @@
             name: "ABC045: C - One-stroke Path",
             matching: ExactWords,
         ),
+        "arc084-c": (
+            name: "ABC077 / ARC084: C - Snuke Festival",
+            matching: ExactWords,
+        ),
         "abc084-d": (
             name: "ABC084: D - 2017-like Number",
             matching: ExactWords,
diff --git a/examples/testsets/arc084-c/in/s1.txt b/examples/testsets/arc084-c/in/s1.txt
new file mode 100644
index 0000000..094d702
--- /dev/null
+++ b/examples/testsets/arc084-c/in/s1.txt
@@ -0,0 +1,4 @@
+2
+1 5
+2 4
+3 6
diff --git a/examples/testsets/arc084-c/in/s2.txt b/examples/testsets/arc084-c/in/s2.txt
new file mode 100644
index 0000000..a304b91
--- /dev/null
+++ b/examples/testsets/arc084-c/in/s2.txt
@@ -0,0 +1,4 @@
+3
+1 1 1
+2 2 2
+3 3 3
diff --git a/examples/testsets/arc084-c/in/s3.txt b/examples/testsets/arc084-c/in/s3.txt
new file mode 100644
index 0000000..ad6543d
--- /dev/null
+++ b/examples/testsets/arc084-c/in/s3.txt
@@ -0,0 +1,4 @@
+6
+3 14 159 2 6 53
+58 9 79 323 84 6
+2643 383 2 79 50 288
diff --git a/examples/testsets/arc084-c/out/s1.txt b/examples/testsets/arc084-c/out/s1.txt
new file mode 100644
index 0000000..00750ed
--- /dev/null
+++ b/examples/testsets/arc084-c/out/s1.txt
@@ -0,0 +1 @@
+3
diff --git a/examples/testsets/arc084-c/out/s2.txt b/examples/testsets/arc084-c/out/s2.txt
new file mode 100644
index 0000000..f64f5d8
--- /dev/null
+++ b/examples/testsets/arc084-c/out/s2.txt
@@ -0,0 +1 @@
+27
diff --git a/examples/testsets/arc084-c/out/s3.txt b/examples/testsets/arc084-c/out/s3.txt
new file mode 100644
index 0000000..84df352
--- /dev/null
+++ b/examples/testsets/arc084-c/out/s3.txt
@@ -0,0 +1 @@
+87

From 2beb8ac5723018dad4a4e2774753ffb21f8ec562 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 20 Dec 2019 12:19:34 +0900
Subject: [PATCH 03/39] Add a test for ABC144-D

---
 examples/abc144-d.rs                          | 23 ++++++++++++
 examples/tests.ron                            | 36 ++++++++++---------
 examples/testsets/abc144-d/in/handmade03.txt  |  1 +
 examples/testsets/abc144-d/in/handmade04.txt  |  1 +
 examples/testsets/abc144-d/in/random05.txt    |  1 +
 examples/testsets/abc144-d/in/random06.txt    |  1 +
 examples/testsets/abc144-d/in/random07.txt    |  1 +
 examples/testsets/abc144-d/in/random08.txt    |  1 +
 examples/testsets/abc144-d/in/random09.txt    |  1 +
 examples/testsets/abc144-d/in/random10.txt    |  1 +
 examples/testsets/abc144-d/in/random11.txt    |  1 +
 examples/testsets/abc144-d/in/random12.txt    |  1 +
 examples/testsets/abc144-d/in/random13.txt    |  1 +
 examples/testsets/abc144-d/in/random14.txt    |  1 +
 examples/testsets/abc144-d/in/sample00.txt    |  1 +
 examples/testsets/abc144-d/in/sample01.txt    |  1 +
 examples/testsets/abc144-d/in/sample02.txt    |  1 +
 examples/testsets/abc144-d/out/handmade03.txt |  1 +
 examples/testsets/abc144-d/out/handmade04.txt |  1 +
 examples/testsets/abc144-d/out/random05.txt   |  1 +
 examples/testsets/abc144-d/out/random06.txt   |  1 +
 examples/testsets/abc144-d/out/random07.txt   |  1 +
 examples/testsets/abc144-d/out/random08.txt   |  1 +
 examples/testsets/abc144-d/out/random09.txt   |  1 +
 examples/testsets/abc144-d/out/random10.txt   |  1 +
 examples/testsets/abc144-d/out/random11.txt   |  1 +
 examples/testsets/abc144-d/out/random12.txt   |  1 +
 examples/testsets/abc144-d/out/random13.txt   |  1 +
 examples/testsets/abc144-d/out/random14.txt   |  1 +
 examples/testsets/abc144-d/out/sample00.txt   |  1 +
 examples/testsets/abc144-d/out/sample01.txt   |  1 +
 examples/testsets/abc144-d/out/sample02.txt   |  1 +
 tools/test-with-generated-opts/Cargo.toml     |  5 +--
 tools/test-with-generated-opts/src/main.rs    | 35 +++++++++++++++---
 34 files changed, 107 insertions(+), 22 deletions(-)
 create mode 100644 examples/abc144-d.rs
 create mode 100644 examples/testsets/abc144-d/in/handmade03.txt
 create mode 100644 examples/testsets/abc144-d/in/handmade04.txt
 create mode 100644 examples/testsets/abc144-d/in/random05.txt
 create mode 100644 examples/testsets/abc144-d/in/random06.txt
 create mode 100644 examples/testsets/abc144-d/in/random07.txt
 create mode 100644 examples/testsets/abc144-d/in/random08.txt
 create mode 100644 examples/testsets/abc144-d/in/random09.txt
 create mode 100644 examples/testsets/abc144-d/in/random10.txt
 create mode 100644 examples/testsets/abc144-d/in/random11.txt
 create mode 100644 examples/testsets/abc144-d/in/random12.txt
 create mode 100644 examples/testsets/abc144-d/in/random13.txt
 create mode 100644 examples/testsets/abc144-d/in/random14.txt
 create mode 100644 examples/testsets/abc144-d/in/sample00.txt
 create mode 100644 examples/testsets/abc144-d/in/sample01.txt
 create mode 100644 examples/testsets/abc144-d/in/sample02.txt
 create mode 100644 examples/testsets/abc144-d/out/handmade03.txt
 create mode 100644 examples/testsets/abc144-d/out/handmade04.txt
 create mode 100644 examples/testsets/abc144-d/out/random05.txt
 create mode 100644 examples/testsets/abc144-d/out/random06.txt
 create mode 100644 examples/testsets/abc144-d/out/random07.txt
 create mode 100644 examples/testsets/abc144-d/out/random08.txt
 create mode 100644 examples/testsets/abc144-d/out/random09.txt
 create mode 100644 examples/testsets/abc144-d/out/random10.txt
 create mode 100644 examples/testsets/abc144-d/out/random11.txt
 create mode 100644 examples/testsets/abc144-d/out/random12.txt
 create mode 100644 examples/testsets/abc144-d/out/random13.txt
 create mode 100644 examples/testsets/abc144-d/out/random14.txt
 create mode 100644 examples/testsets/abc144-d/out/sample00.txt
 create mode 100644 examples/testsets/abc144-d/out/sample01.txt
 create mode 100644 examples/testsets/abc144-d/out/sample02.txt

diff --git a/examples/abc144-d.rs b/examples/abc144-d.rs
new file mode 100644
index 0000000..699fdb4
--- /dev/null
+++ b/examples/abc144-d.rs
@@ -0,0 +1,23 @@
+// https://atcoder.jp/contests/abc144/tasks/abc144_d
+
+use defmac::defmac;
+
+use std::f64::consts::PI;
+use std::io::{self, Read as _};
+
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    defmac!(read => input.next().unwrap().parse().unwrap());
+
+    let (a, b, x): (f64, f64, f64) = (read!(), read!(), read!());
+
+    let ans = 180.0 / PI
+        * if x >= (a.powi(2) * b) / 2.0 {
+            libm::atan2(2.0 * (a.powi(2) * b - x), a.powi(3))
+        } else {
+            PI / 2.0 - libm::atan2(2.0 * x, a * b.powi(2))
+        };
+    println!("{}", ans);
+}
diff --git a/examples/tests.ron b/examples/tests.ron
index fac6f38..e0a7454 100644
--- a/examples/tests.ron
+++ b/examples/tests.ron
@@ -1,59 +1,63 @@
-// 手元でDropboxのテストケース（ある場合）で確認し、Gitに含めるのはそのうちサンプルのみ。
-// CI上でもサンプルだけテストする。（Dropboxから引っ張るのも面倒だし何より誰のアカウントを使うかという問題がある）
+// 手元でDropboxのテストケース（ある場合）で確認し、サンプルに含まれていないやつが大きいときはそれらをGitに入れない。
+// その場合CI上でもサンプルだけテストする。（Dropboxから引っ張るのも面倒だし何より誰のアカウントを使うかという問題がある）
 
 (
     tests: {
         "apg4b-a": (
             name: "APG4b: A - 1.00.はじめに",
-            matching: ExactWhole,
+            matching: Exact,
         ),
         "apg4b-ex25": (
             name: "APG4b: EX25 - 集合の操作 / 3.05",
-            matching: ExactWords,
+            matching: Words,
         ),
         "apg4b-ex26": (
             name: "APG4b: EX26 - 電卓を作ろう3 / 3.06",
-            matching: ExactWords,
+            matching: Exact,
         ),
         "practice-a": (
             name: "practice contest: A - Welcome to AtCoder",
-            matching: ExactWords,
+            matching: Words,
         ),
         "atc001-b": (
             name: "ATC001: B - Union Find",
-            matching: ExactWords,
+            matching: Words,
         ),
         "atc002-b": (
             name: "ATC002: B - n^p mod m",
-            matching: ExactWords,
+            matching: Words,
         ),
         "arc065-c": (
             name: "ABC049 / ARC065: C - 白昼夢 / Daydream",
-            matching: ExactWords,
+            matching: Words,
         ),
         "abc054-c": (
             name: "ABC045: C - One-stroke Path",
-            matching: ExactWords,
+            matching: Words,
         ),
         "arc084-c": (
             name: "ABC077 / ARC084: C - Snuke Festival",
-            matching: ExactWords,
+            matching: Words,
         ),
         "abc084-d": (
             name: "ABC084: D - 2017-like Number",
-            matching: ExactWords,
+            matching: Words,
         ),
         "abc120-d": (
             name: "ABC120: D - Decayed Bridges",
-            matching: ExactWords,
+            matching: Words,
         ),
         "abc129-f": (
             name: "ABC129: F - Takahashi's Basics in Education and Learning",
-            matching: ExactWords,
+            matching: Words,
         ),
         "abc142-d": (
-            name: "ABC124: D - Disjoint Set of Common Divisors",
-            matching: ExactWords,
+            name: "ABC142: D - Disjoint Set of Common Divisors",
+            matching: Words,
+        ),
+        "abc144-d": (
+            name: "ABC144: D - Water Bottle",
+            matching: FloatOr(abs: 1e-6, rel: 1e-6),
         ),
     }
 )
diff --git a/examples/testsets/abc144-d/in/handmade03.txt b/examples/testsets/abc144-d/in/handmade03.txt
new file mode 100644
index 0000000..8e93976
--- /dev/null
+++ b/examples/testsets/abc144-d/in/handmade03.txt
@@ -0,0 +1 @@
+100 100 1000000
diff --git a/examples/testsets/abc144-d/in/handmade04.txt b/examples/testsets/abc144-d/in/handmade04.txt
new file mode 100644
index 0000000..7fbeff6
--- /dev/null
+++ b/examples/testsets/abc144-d/in/handmade04.txt
@@ -0,0 +1 @@
+100 100 1
diff --git a/examples/testsets/abc144-d/in/random05.txt b/examples/testsets/abc144-d/in/random05.txt
new file mode 100644
index 0000000..14990bf
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random05.txt
@@ -0,0 +1 @@
+22 75 24126
diff --git a/examples/testsets/abc144-d/in/random06.txt b/examples/testsets/abc144-d/in/random06.txt
new file mode 100644
index 0000000..755b7bf
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random06.txt
@@ -0,0 +1 @@
+45 72 83481
diff --git a/examples/testsets/abc144-d/in/random07.txt b/examples/testsets/abc144-d/in/random07.txt
new file mode 100644
index 0000000..39779cd
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random07.txt
@@ -0,0 +1 @@
+47 29 44734
diff --git a/examples/testsets/abc144-d/in/random08.txt b/examples/testsets/abc144-d/in/random08.txt
new file mode 100644
index 0000000..3879741
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random08.txt
@@ -0,0 +1 @@
+2 75 25
diff --git a/examples/testsets/abc144-d/in/random09.txt b/examples/testsets/abc144-d/in/random09.txt
new file mode 100644
index 0000000..743d648
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random09.txt
@@ -0,0 +1 @@
+82 84 416241
diff --git a/examples/testsets/abc144-d/in/random10.txt b/examples/testsets/abc144-d/in/random10.txt
new file mode 100644
index 0000000..f6ed7a2
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random10.txt
@@ -0,0 +1 @@
+56 32 30430
diff --git a/examples/testsets/abc144-d/in/random11.txt b/examples/testsets/abc144-d/in/random11.txt
new file mode 100644
index 0000000..a7f6400
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random11.txt
@@ -0,0 +1 @@
+28 37 11105
diff --git a/examples/testsets/abc144-d/in/random12.txt b/examples/testsets/abc144-d/in/random12.txt
new file mode 100644
index 0000000..335f3df
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random12.txt
@@ -0,0 +1 @@
+39 18 23359
diff --git a/examples/testsets/abc144-d/in/random13.txt b/examples/testsets/abc144-d/in/random13.txt
new file mode 100644
index 0000000..198104c
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random13.txt
@@ -0,0 +1 @@
+79 6 29018
diff --git a/examples/testsets/abc144-d/in/random14.txt b/examples/testsets/abc144-d/in/random14.txt
new file mode 100644
index 0000000..69c13fe
--- /dev/null
+++ b/examples/testsets/abc144-d/in/random14.txt
@@ -0,0 +1 @@
+68 68 313904
diff --git a/examples/testsets/abc144-d/in/sample00.txt b/examples/testsets/abc144-d/in/sample00.txt
new file mode 100644
index 0000000..f50aaec
--- /dev/null
+++ b/examples/testsets/abc144-d/in/sample00.txt
@@ -0,0 +1 @@
+2 2 4
diff --git a/examples/testsets/abc144-d/in/sample01.txt b/examples/testsets/abc144-d/in/sample01.txt
new file mode 100644
index 0000000..4fe9466
--- /dev/null
+++ b/examples/testsets/abc144-d/in/sample01.txt
@@ -0,0 +1 @@
+12 21 10
diff --git a/examples/testsets/abc144-d/in/sample02.txt b/examples/testsets/abc144-d/in/sample02.txt
new file mode 100644
index 0000000..469cc0f
--- /dev/null
+++ b/examples/testsets/abc144-d/in/sample02.txt
@@ -0,0 +1 @@
+3 1 8
diff --git a/examples/testsets/abc144-d/out/handmade03.txt b/examples/testsets/abc144-d/out/handmade03.txt
new file mode 100644
index 0000000..c9ea018
--- /dev/null
+++ b/examples/testsets/abc144-d/out/handmade03.txt
@@ -0,0 +1 @@
+0.0000000000
diff --git a/examples/testsets/abc144-d/out/handmade04.txt b/examples/testsets/abc144-d/out/handmade04.txt
new file mode 100644
index 0000000..04e6032
--- /dev/null
+++ b/examples/testsets/abc144-d/out/handmade04.txt
@@ -0,0 +1 @@
+89.9998854084
diff --git a/examples/testsets/abc144-d/out/random05.txt b/examples/testsets/abc144-d/out/random05.txt
new file mode 100644
index 0000000..360fb06
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random05.txt
@@ -0,0 +1 @@
+66.3790171829
diff --git a/examples/testsets/abc144-d/out/random06.txt b/examples/testsets/abc144-d/out/random06.txt
new file mode 100644
index 0000000..4520afe
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random06.txt
@@ -0,0 +1 @@
+53.8288157430
diff --git a/examples/testsets/abc144-d/out/random07.txt b/examples/testsets/abc144-d/out/random07.txt
new file mode 100644
index 0000000..d696f30
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random07.txt
@@ -0,0 +1 @@
+20.4206366709
diff --git a/examples/testsets/abc144-d/out/random08.txt b/examples/testsets/abc144-d/out/random08.txt
new file mode 100644
index 0000000..695b836
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random08.txt
@@ -0,0 +1 @@
+89.7453537677
diff --git a/examples/testsets/abc144-d/out/random09.txt b/examples/testsets/abc144-d/out/random09.txt
new file mode 100644
index 0000000..675a819
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random09.txt
@@ -0,0 +1 @@
+28.3216596827
diff --git a/examples/testsets/abc144-d/out/random10.txt b/examples/testsets/abc144-d/out/random10.txt
new file mode 100644
index 0000000..dad6b80
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random10.txt
@@ -0,0 +1 @@
+43.2962287317
diff --git a/examples/testsets/abc144-d/out/random11.txt b/examples/testsets/abc144-d/out/random11.txt
new file mode 100644
index 0000000..5aade64
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random11.txt
@@ -0,0 +1 @@
+59.9115059975
diff --git a/examples/testsets/abc144-d/out/random12.txt b/examples/testsets/abc144-d/out/random12.txt
new file mode 100644
index 0000000..7d70f65
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random12.txt
@@ -0,0 +1 @@
+7.7168423353
diff --git a/examples/testsets/abc144-d/out/random13.txt b/examples/testsets/abc144-d/out/random13.txt
new file mode 100644
index 0000000..91cc451
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random13.txt
@@ -0,0 +1 @@
+1.9580634609
diff --git a/examples/testsets/abc144-d/out/random14.txt b/examples/testsets/abc144-d/out/random14.txt
new file mode 100644
index 0000000..6b0d01f
--- /dev/null
+++ b/examples/testsets/abc144-d/out/random14.txt
@@ -0,0 +1 @@
+0.1924235310
diff --git a/examples/testsets/abc144-d/out/sample00.txt b/examples/testsets/abc144-d/out/sample00.txt
new file mode 100644
index 0000000..5d86419
--- /dev/null
+++ b/examples/testsets/abc144-d/out/sample00.txt
@@ -0,0 +1 @@
+45.0000000000
diff --git a/examples/testsets/abc144-d/out/sample01.txt b/examples/testsets/abc144-d/out/sample01.txt
new file mode 100644
index 0000000..09c2e94
--- /dev/null
+++ b/examples/testsets/abc144-d/out/sample01.txt
@@ -0,0 +1 @@
+89.7834636934
diff --git a/examples/testsets/abc144-d/out/sample02.txt b/examples/testsets/abc144-d/out/sample02.txt
new file mode 100644
index 0000000..d3b8514
--- /dev/null
+++ b/examples/testsets/abc144-d/out/sample02.txt
@@ -0,0 +1 @@
+4.2363947991
diff --git a/tools/test-with-generated-opts/Cargo.toml b/tools/test-with-generated-opts/Cargo.toml
index 005577f..abd5a7a 100644
--- a/tools/test-with-generated-opts/Cargo.toml
+++ b/tools/test-with-generated-opts/Cargo.toml
@@ -7,13 +7,14 @@ description = "Test with `rustc-dep-option-generator`."
 
 [dependencies]
 anyhow = "1.0.25"
+approx = "0.3.2"
 env_logger = "0.7.1"
 indexmap = { version = "1.3.0", features = ["serde-1"] }
 itertools = "0.8.2"
 log = "0.4.8"
 ron = "0.5.1"
-serde = { version = "1.0.103", features = ["derive"] }
-serde_json = "1.0.42"
+serde = { version = "1.0.104", features = ["derive"] }
+serde_json = "1.0.44"
 shell-escape = "0.1.4"
 structopt = "0.3.5"
 tempdir = "0.3.7"
diff --git a/tools/test-with-generated-opts/src/main.rs b/tools/test-with-generated-opts/src/main.rs
index f78d031..e7dfa85 100644
--- a/tools/test-with-generated-opts/src/main.rs
+++ b/tools/test-with-generated-opts/src/main.rs
@@ -1,4 +1,5 @@
 use anyhow::{anyhow, Context as _};
+use approx::{abs_diff_eq, relative_eq};
 use env_logger::fmt::Color;
 use indexmap::IndexMap;
 use itertools::Itertools as _;
@@ -9,6 +10,7 @@ use tempdir::TempDir;
 
 use std::collections::{BTreeMap, HashMap};
 use std::env;
+use std::f64;
 use std::ffi::{OsStr, OsString};
 use std::fs::{self, File};
 use std::io::{self, Read as _, Write as _};
@@ -222,17 +224,42 @@ struct Test {
 
 #[derive(Debug, Clone, Copy, Deserialize)]
 enum Matching {
-    ExactWhole,
-    ExactWords,
+    Exact,
+    Words,
+    FloatOr {
+        #[serde(default = "nan")]
+        abs: f64,
+        #[serde(default = "nan")]
+        rel: f64,
+    },
+}
+
+const fn nan() -> f64 {
+    f64::NAN
 }
 
 impl Matching {
     fn accepts(self, expected: &str, actual: &str) -> bool {
         match self {
-            Matching::ExactWhole => expected == actual,
-            Matching::ExactWords => {
+            Matching::Exact => expected == actual,
+            Matching::Words => {
                 itertools::equal(expected.split_whitespace(), actual.split_whitespace())
             }
+            Matching::FloatOr { abs, rel } => itertools::diff_with(
+                expected.split_whitespace(),
+                actual.split_whitespace(),
+                |expected, actual| {
+                    if let (Ok(expected), Ok(actual)) =
+                        (expected.parse::<f64>(), actual.parse::<f64>())
+                    {
+                        abs_diff_eq!(expected, actual, epsilon = abs)
+                            || relative_eq!(expected, actual, max_relative = rel)
+                    } else {
+                        expected == actual
+                    }
+                },
+            )
+            .is_none(),
         }
     }
 }

From 1aa9c37b4f31989e47b96cfe7ae74002f91ae667 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 20 Dec 2019 17:15:55 +0900
Subject: [PATCH 04/39] Add a test for ABC057-B

---
 examples/abc057-b.rs                         | 26 ++++++++++++++++++++
 examples/tests.ron                           |  6 ++++-
 examples/testsets/abc057-b/in/sample_01.txt  |  5 ++++
 examples/testsets/abc057-b/in/sample_02.txt  |  8 ++++++
 examples/testsets/abc057-b/in/sample_03.txt  | 11 +++++++++
 examples/testsets/abc057-b/out/sample_01.txt |  2 ++
 examples/testsets/abc057-b/out/sample_02.txt |  3 +++
 examples/testsets/abc057-b/out/sample_03.txt |  5 ++++
 8 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 examples/abc057-b.rs
 create mode 100644 examples/testsets/abc057-b/in/sample_01.txt
 create mode 100644 examples/testsets/abc057-b/in/sample_02.txt
 create mode 100644 examples/testsets/abc057-b/in/sample_03.txt
 create mode 100644 examples/testsets/abc057-b/out/sample_01.txt
 create mode 100644 examples/testsets/abc057-b/out/sample_02.txt
 create mode 100644 examples/testsets/abc057-b/out/sample_03.txt

diff --git a/examples/abc057-b.rs b/examples/abc057-b.rs
new file mode 100644
index 0000000..2f22337
--- /dev/null
+++ b/examples/abc057-b.rs
@@ -0,0 +1,26 @@
+// https://atcoder.jp/contests/abc057/tasks/abc057_b
+
+#![allow(clippy::many_single_char_names, clippy::try_err)]
+
+use text_io::{read, try_read, try_scan};
+
+fn main() {
+    let n: usize = read!();
+    let m: usize = read!();
+    let abs = (0..n)
+        .map(|_| (read!(), read!()))
+        .collect::<Vec<(i64, i64)>>();
+    let cds = (0..m)
+        .map(|_| (read!(), read!()))
+        .collect::<Vec<(i64, i64)>>();
+
+    for (a, b) in abs {
+        let j = (0..m)
+            .min_by_key(|&j| {
+                let (c, d) = cds[j];
+                (a - c).abs() + (b - d).abs()
+            })
+            .unwrap();
+        println!("{}", j + 1);
+    }
+}
diff --git a/examples/tests.ron b/examples/tests.ron
index e0a7454..25604da 100644
--- a/examples/tests.ron
+++ b/examples/tests.ron
@@ -32,7 +32,11 @@
             matching: Words,
         ),
         "abc054-c": (
-            name: "ABC045: C - One-stroke Path",
+            name: "ABC054: C - One-stroke Path",
+            matching: Words,
+        ),
+        "abc057-b": (
+            name: "ABC057: B - Checkpoints",
             matching: Words,
         ),
         "arc084-c": (
diff --git a/examples/testsets/abc057-b/in/sample_01.txt b/examples/testsets/abc057-b/in/sample_01.txt
new file mode 100644
index 0000000..c43659a
--- /dev/null
+++ b/examples/testsets/abc057-b/in/sample_01.txt
@@ -0,0 +1,5 @@
+2 2
+2 0
+0 0
+-1 0
+1 0
diff --git a/examples/testsets/abc057-b/in/sample_02.txt b/examples/testsets/abc057-b/in/sample_02.txt
new file mode 100644
index 0000000..541f6dd
--- /dev/null
+++ b/examples/testsets/abc057-b/in/sample_02.txt
@@ -0,0 +1,8 @@
+3 4
+10 10
+-10 -10
+3 3
+1 2
+2 3
+3 5
+3 5
diff --git a/examples/testsets/abc057-b/in/sample_03.txt b/examples/testsets/abc057-b/in/sample_03.txt
new file mode 100644
index 0000000..596121c
--- /dev/null
+++ b/examples/testsets/abc057-b/in/sample_03.txt
@@ -0,0 +1,11 @@
+5 5
+-100000000 -100000000
+-100000000 100000000
+100000000 -100000000
+100000000 100000000
+0 0
+0 0
+100000000 100000000
+100000000 -100000000
+-100000000 100000000
+-100000000 -100000000
diff --git a/examples/testsets/abc057-b/out/sample_01.txt b/examples/testsets/abc057-b/out/sample_01.txt
new file mode 100644
index 0000000..5f1d0ec
--- /dev/null
+++ b/examples/testsets/abc057-b/out/sample_01.txt
@@ -0,0 +1,2 @@
+2
+1
diff --git a/examples/testsets/abc057-b/out/sample_02.txt b/examples/testsets/abc057-b/out/sample_02.txt
new file mode 100644
index 0000000..0571a2e
--- /dev/null
+++ b/examples/testsets/abc057-b/out/sample_02.txt
@@ -0,0 +1,3 @@
+3
+1
+2
diff --git a/examples/testsets/abc057-b/out/sample_03.txt b/examples/testsets/abc057-b/out/sample_03.txt
new file mode 100644
index 0000000..86e24d1
--- /dev/null
+++ b/examples/testsets/abc057-b/out/sample_03.txt
@@ -0,0 +1,5 @@
+5
+4
+3
+2
+1

From 3d78a595220237331eb4b37ade7f306ea1c3be32 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 20 Dec 2019 17:38:57 +0900
Subject: [PATCH 05/39] Add a test for ABC118-B

---
 examples/abc118-b.rs                         | 23 ++++++++++++++++++++
 examples/tests.ron                           |  4 ++++
 examples/testsets/abc118-b/in/sample_01.txt  |  4 ++++
 examples/testsets/abc118-b/in/sample_02.txt  |  6 +++++
 examples/testsets/abc118-b/in/sample_03.txt  |  2 ++
 examples/testsets/abc118-b/out/sample_01.txt |  1 +
 examples/testsets/abc118-b/out/sample_02.txt |  1 +
 examples/testsets/abc118-b/out/sample_03.txt |  1 +
 8 files changed, 42 insertions(+)
 create mode 100644 examples/abc118-b.rs
 create mode 100644 examples/testsets/abc118-b/in/sample_01.txt
 create mode 100644 examples/testsets/abc118-b/in/sample_02.txt
 create mode 100644 examples/testsets/abc118-b/in/sample_03.txt
 create mode 100644 examples/testsets/abc118-b/out/sample_01.txt
 create mode 100644 examples/testsets/abc118-b/out/sample_02.txt
 create mode 100644 examples/testsets/abc118-b/out/sample_03.txt

diff --git a/examples/abc118-b.rs b/examples/abc118-b.rs
new file mode 100644
index 0000000..f784580
--- /dev/null
+++ b/examples/abc118-b.rs
@@ -0,0 +1,23 @@
+// https://atcoder.jp/contests/abc118/tasks/abc118_b
+
+use whiteread::Reader;
+
+use std::ops::{BitAnd, BitOr};
+
+fn main() {
+    let mut rdr = Reader::from_stdin_naive();
+    let (n, _) = rdr.p::<(usize, usize)>();
+    let a = (0..n)
+        .map(|_| {
+            let k = rdr.p::<usize>();
+            (0..k).map(|_| rdr.p::<usize>() - 1).collect()
+        })
+        .collect::<Vec<Vec<_>>>();
+
+    let ans = a
+        .into_iter()
+        .map(|row| row.into_iter().map(|k| 1 << k).fold(0, BitOr::bitor))
+        .fold(usize::max_value(), BitAnd::bitand)
+        .count_ones();
+    println!("{}", ans);
+}
diff --git a/examples/tests.ron b/examples/tests.ron
index 25604da..73aaedc 100644
--- a/examples/tests.ron
+++ b/examples/tests.ron
@@ -47,6 +47,10 @@
             name: "ABC084: D - 2017-like Number",
             matching: Words,
         ),
+        "abc118-b": (
+            name: "ABC118: B - Foods Loved by Everyone",
+            matching: Words,
+        ),
         "abc120-d": (
             name: "ABC120: D - Decayed Bridges",
             matching: Words,
diff --git a/examples/testsets/abc118-b/in/sample_01.txt b/examples/testsets/abc118-b/in/sample_01.txt
new file mode 100644
index 0000000..b6505e4
--- /dev/null
+++ b/examples/testsets/abc118-b/in/sample_01.txt
@@ -0,0 +1,4 @@
+3 4
+2 1 3
+3 1 2 3
+2 3 2
diff --git a/examples/testsets/abc118-b/in/sample_02.txt b/examples/testsets/abc118-b/in/sample_02.txt
new file mode 100644
index 0000000..993996b
--- /dev/null
+++ b/examples/testsets/abc118-b/in/sample_02.txt
@@ -0,0 +1,6 @@
+5 5
+4 2 3 4 5
+4 1 3 4 5
+4 1 2 4 5
+4 1 2 3 5
+4 1 2 3 4
diff --git a/examples/testsets/abc118-b/in/sample_03.txt b/examples/testsets/abc118-b/in/sample_03.txt
new file mode 100644
index 0000000..9e096c0
--- /dev/null
+++ b/examples/testsets/abc118-b/in/sample_03.txt
@@ -0,0 +1,2 @@
+1 30
+3 5 10 30
diff --git a/examples/testsets/abc118-b/out/sample_01.txt b/examples/testsets/abc118-b/out/sample_01.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/examples/testsets/abc118-b/out/sample_01.txt
@@ -0,0 +1 @@
+1
diff --git a/examples/testsets/abc118-b/out/sample_02.txt b/examples/testsets/abc118-b/out/sample_02.txt
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/examples/testsets/abc118-b/out/sample_02.txt
@@ -0,0 +1 @@
+0
diff --git a/examples/testsets/abc118-b/out/sample_03.txt b/examples/testsets/abc118-b/out/sample_03.txt
new file mode 100644
index 0000000..00750ed
--- /dev/null
+++ b/examples/testsets/abc118-b/out/sample_03.txt
@@ -0,0 +1 @@
+3

From 3a72838de3968377af10f6aa9dde3315ad2ffb0b Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 20 Dec 2019 17:51:33 +0900
Subject: [PATCH 06/39] Add a test for ABC121-B

---
 examples/abc121-b.rs                         | 19 +++++++++++++++++++
 examples/tests.ron                           |  4 ++++
 examples/testsets/abc121-b/in/sample_01.txt  |  4 ++++
 examples/testsets/abc121-b/in/sample_02.txt  |  7 +++++++
 examples/testsets/abc121-b/in/sample_03.txt  |  5 +++++
 examples/testsets/abc121-b/out/sample_01.txt |  1 +
 examples/testsets/abc121-b/out/sample_02.txt |  1 +
 examples/testsets/abc121-b/out/sample_03.txt |  1 +
 8 files changed, 42 insertions(+)
 create mode 100644 examples/abc121-b.rs
 create mode 100644 examples/testsets/abc121-b/in/sample_01.txt
 create mode 100644 examples/testsets/abc121-b/in/sample_02.txt
 create mode 100644 examples/testsets/abc121-b/in/sample_03.txt
 create mode 100644 examples/testsets/abc121-b/out/sample_01.txt
 create mode 100644 examples/testsets/abc121-b/out/sample_02.txt
 create mode 100644 examples/testsets/abc121-b/out/sample_03.txt

diff --git a/examples/abc121-b.rs b/examples/abc121-b.rs
new file mode 100644
index 0000000..f4e8de7
--- /dev/null
+++ b/examples/abc121-b.rs
@@ -0,0 +1,19 @@
+// https://atcoder.jp/contests/abc121/tasks/abc121_b
+
+use proconio::input;
+
+fn main() {
+    input! {
+        n: usize,
+        m: usize,
+        c: i32,
+        b: [i32; m],
+        a: [[i32; m]; n],
+    }
+
+    let ans = a
+        .into_iter()
+        .filter(|a| a.iter().zip(&b).map(|(a, b)| a * b).sum::<i32>() + c > 0)
+        .count();
+    println!("{}", ans);
+}
diff --git a/examples/tests.ron b/examples/tests.ron
index 73aaedc..ffb64b9 100644
--- a/examples/tests.ron
+++ b/examples/tests.ron
@@ -55,6 +55,10 @@
             name: "ABC120: D - Decayed Bridges",
             matching: Words,
         ),
+        "abc121-b": (
+            name: "ABC121: B - Can you solve this?",
+            matching: Words,
+        ),
         "abc129-f": (
             name: "ABC129: F - Takahashi's Basics in Education and Learning",
             matching: Words,
diff --git a/examples/testsets/abc121-b/in/sample_01.txt b/examples/testsets/abc121-b/in/sample_01.txt
new file mode 100644
index 0000000..27c8ec2
--- /dev/null
+++ b/examples/testsets/abc121-b/in/sample_01.txt
@@ -0,0 +1,4 @@
+2 3 -10
+1 2 3
+3 2 1
+1 2 2
diff --git a/examples/testsets/abc121-b/in/sample_02.txt b/examples/testsets/abc121-b/in/sample_02.txt
new file mode 100644
index 0000000..b47a11c
--- /dev/null
+++ b/examples/testsets/abc121-b/in/sample_02.txt
@@ -0,0 +1,7 @@
+5 2 -4
+-2 5
+100 41
+100 40
+-3 0
+-6 -2
+18 -13
diff --git a/examples/testsets/abc121-b/in/sample_03.txt b/examples/testsets/abc121-b/in/sample_03.txt
new file mode 100644
index 0000000..819f8c3
--- /dev/null
+++ b/examples/testsets/abc121-b/in/sample_03.txt
@@ -0,0 +1,5 @@
+3 3 0
+100 -100 0
+0 100 100
+100 100 100
+-100 100 100
diff --git a/examples/testsets/abc121-b/out/sample_01.txt b/examples/testsets/abc121-b/out/sample_01.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/examples/testsets/abc121-b/out/sample_01.txt
@@ -0,0 +1 @@
+1
diff --git a/examples/testsets/abc121-b/out/sample_02.txt b/examples/testsets/abc121-b/out/sample_02.txt
new file mode 100644
index 0000000..0cfbf08
--- /dev/null
+++ b/examples/testsets/abc121-b/out/sample_02.txt
@@ -0,0 +1 @@
+2
diff --git a/examples/testsets/abc121-b/out/sample_03.txt b/examples/testsets/abc121-b/out/sample_03.txt
new file mode 100644
index 0000000..573541a
--- /dev/null
+++ b/examples/testsets/abc121-b/out/sample_03.txt
@@ -0,0 +1 @@
+0

From 4be7fead4877649713701ad7e4a473c2f645dd5b Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 20 Dec 2019 19:06:06 +0900
Subject: [PATCH 07/39] Remove `proconio::input!` from the examples other than
 `abc121-b`

---
 examples/abc054-c.rs   | 68 +++++++++++++++--------------------
 examples/abc084-d.rs   | 64 +++++++++++++++++----------------
 examples/abc120-d.rs   | 82 +++++++++++++++++++++---------------------
 examples/abc129-f.rs   | 41 +++++----------------
 examples/abc142-d.rs   | 37 ++++---------------
 examples/apg4b-a.rs    |  2 ++
 examples/apg4b-ex25.rs | 69 ++++++++++++++++-------------------
 examples/arc065-c.rs   | 36 +++----------------
 examples/arc084-c.rs   | 57 +++++++++++++----------------
 examples/atc001-b.rs   | 67 +++++++++++++++++-----------------
 examples/atc002-b.rs   | 28 +++++----------
 examples/practice-a.rs | 28 +++++----------
 12 files changed, 231 insertions(+), 348 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index 63d8f99..a1cde35 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -3,51 +3,41 @@
 use petgraph::csr::Csr;
 use petgraph::Undirected;
 
-fn main() {
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // macro_rules! read {
-    //     ([$t:tt; $n:expr]) => {
-    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
-    //     };
-    //     (($($t:tt),+)) => {
-    //         ($(read!($t)),*)
-    //     };
-    //     (_1based) => {
-    //         read!(usize) - 1
-    //     };
-    //     (_bytes) => {
-    //         read!(String).into_bytes()
-    //     };
-    //     ($ty:ty) => {
-    //         input.next().unwrap().parse::<$ty>().unwrap()
-    //     };
-    // }
-    //
-    // let (n, m) = read!((usize, usize));
-    // let mut abs = read!([(_1based, _1based); m]);
-
-    use proconio::input;
-    use proconio::marker::Usize1;
+use std::io::{self, Read as _};
 
-    input! {
-        n: usize,
-        m: usize,
-        mut abs: [(Usize1, Usize1); m],
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules! read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        (_bytes) => {
+            read!(String).into_bytes()
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
     }
 
-    abs.sort();
-    let mut g = Csr::<(), (), Undirected, usize>::with_nodes(n);
+    let (n, m) = read!((usize, usize));
+    let abs = read!([(_1based, _1based); m]);
+
+    let mut graph = Csr::<(), (), Undirected, usize>::with_nodes(n);
     for (a, b) in abs {
-        g.add_edge(a, b, ());
+        graph.add_edge(a, b, ());
     }
     let mut ans = 0;
-    let mut es = (0..n).collect::<Vec<_>>();
-    permutohedron::heap_recursive(&mut es, |es| {
-        if es[0] == 0 && es.windows(2).all(|w| g.contains_edge(w[0], w[1])) {
+    let mut nodes = (0..n).collect::<Vec<_>>();
+    permutohedron::heap_recursive(&mut nodes, |nodes| {
+        if nodes[0] == 0 && nodes.windows(2).all(|w| graph.contains_edge(w[0], w[1])) {
             ans += 1;
         }
     });
diff --git a/examples/abc084-d.rs b/examples/abc084-d.rs
index 2a06584..3747c2b 100644
--- a/examples/abc084-d.rs
+++ b/examples/abc084-d.rs
@@ -3,40 +3,42 @@
 use itertools_num::ItertoolsNum as _;
 use primal::Sieve;
 
+use std::io::{self, Read as _};
+
+// `proconio::fastout` does not accept `macro_rules!` until Rust 1.40.
+macro_rules! macro_rules_hack {
+    ($name:ident { $($tt:tt)* }) => {
+        macro_rules! $name {
+            $($tt)*
+        }
+    };
+}
+
 #[proconio::fastout]
 fn main() {
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // macro_rules! read {
-    //     ([$t:tt; $n:expr]) => {
-    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
-    //     };
-    //     (($($t:tt),+)) => {
-    //         ($(read!($t)),*)
-    //     };
-    //     (_1based) => {
-    //         read!(usize) - 1
-    //     };
-    //     (_bytes) => {
-    //         read!(String).into_bytes()
-    //     };
-    //     ($ty:ty) => {
-    //         input.next().unwrap().parse::<$ty>().unwrap()
-    //     };
-    // }
-    //
-    // let q = read!(usize);
-    // let lrs = read!([(usize, usize); q]);
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules_hack!(read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        (_bytes) => {
+            read!(String).into_bytes()
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
+    });
 
-    use proconio::input;
-
-    input! {
-        q: usize,
-        lrs: [(usize, usize); q],
-    }
+    let q = read!(usize);
+    let lrs = read!([(usize, usize); q]);
 
     // サンプルケースでしか試してないので嘘かもしれない。
 
diff --git a/examples/abc120-d.rs b/examples/abc120-d.rs
index 92e33ee..f79079b 100644
--- a/examples/abc120-d.rs
+++ b/examples/abc120-d.rs
@@ -2,55 +2,55 @@
 
 use union_find::{QuickFindUf, UnionBySize, UnionFind as _};
 
+use std::io::{self, Read as _};
+
+// `proconio::fastout` does not accept `macro_rules!` until Rust 1.40.
+macro_rules! macro_rules_hack {
+    ($name:ident { $($tt:tt)* }) => {
+        macro_rules! $name {
+            $($tt)*
+        }
+    };
+}
+
 #[proconio::fastout]
 fn main() {
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // macro_rules! read {
-    //     ([$t:tt; $n:expr]) => {
-    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
-    //     };
-    //     (($($t:tt),+)) => {
-    //         ($(read!($t)),*)
-    //     };
-    //     (_1based) => {
-    //         read!(usize) - 1
-    //     };
-    //     (_bytes) => {
-    //         read!(String).into_bytes()
-    //     };
-    //     ($ty:ty) => {
-    //         input.next().unwrap().parse::<$ty>().unwrap()
-    //     };
-    // }
-    //
-    // let (n, m) = (read!((usize, usize)));
-    // let abs = read!([(_1based, _1based); m]);
-
-    use proconio::input;
-    use proconio::marker::Usize1;
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules_hack!(read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        (_bytes) => {
+            read!(String).into_bytes()
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
+    });
 
-    input! {
-        n: usize,
-        m: usize,
-        abs: [(Usize1, Usize1); m],
-    }
+    let (n, m) = read!((usize, usize));
+    let abs = read!([(_1based, _1based); m]);
 
-    let mut u = QuickFindUf::<UnionBySize>::new(n);
+    let mut uf = QuickFindUf::<UnionBySize>::new(n);
     let mut k = n * (n - 1) / 2;
-    let mut r = vec![k];
-    r.extend(abs.into_iter().rev().map(|(a, b)| {
-        let p = u.get(a).size() * u.get(b).size();
-        if u.union(a, b) {
+    let mut ans_rev = vec![k];
+    ans_rev.extend(abs.into_iter().rev().map(|(a, b)| {
+        let p = uf.get(a).size() * uf.get(b).size();
+        if uf.union(a, b) {
             k -= p;
         }
         k
     }));
-    assert_eq!(r.pop(), Some(0));
-    for r in r.into_iter().rev() {
-        println!("{}", r);
+    assert_eq!(ans_rev.pop(), Some(0));
+    for x in ans_rev.into_iter().rev() {
+        println!("{}", x);
     }
 }
diff --git a/examples/abc129-f.rs b/examples/abc129-f.rs
index 019849a..0fbd84c 100644
--- a/examples/abc129-f.rs
+++ b/examples/abc129-f.rs
@@ -1,5 +1,6 @@
 // https://atcoder.jp/contests/abc129/tasks/abc129_f
 
+use defmac::defmac;
 use derive_more::Display;
 use ndarray::{array, Array2, LinalgScalar};
 use num::{PrimInt, Unsigned};
@@ -7,42 +8,16 @@ use num_derive::{One, Zero};
 
 use std::cell::Cell;
 use std::cmp;
+use std::io::{self, Read as _};
 use std::ops::{Add, Div, Mul, Sub};
 
 fn main() {
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // macro_rules! read {
-    //     ([$t:tt; $n:expr]) => {
-    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
-    //     };
-    //     (($($t:tt),+)) => {
-    //         ($(read!($t)),*)
-    //     };
-    //     (_1based) => {
-    //         read!(usize) - 1
-    //     };
-    //     (_bytes) => {
-    //         read!(String).into_bytes()
-    //     };
-    //     ($ty:ty) => {
-    //         input.next().unwrap().parse::<$ty>().unwrap()
-    //     };
-    // }
-    //
-    // let (l, a, b, m) = read!((u64, u64, u64, u64));
-
-    use proconio::input;
-
-    input! {
-        l: u64,
-        a: u64,
-        b: u64,
-        m: u64,
-    }
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    defmac!(read => input.next().unwrap().parse().unwrap());
+
+    let (l, a, b, m): (u64, u64, u64, u64) = (read!(), read!(), read!(), read!());
 
     MOD.with(|cell| cell.set(m));
 
diff --git a/examples/abc142-d.rs b/examples/abc142-d.rs
index a8fdb4e..fa4d093 100644
--- a/examples/abc142-d.rs
+++ b/examples/abc142-d.rs
@@ -1,42 +1,19 @@
 // https://atcoder.jp/contests/abc142/tasks/abc142_d
 
+use defmac::defmac;
 use primal::Sieve;
 
 use std::cmp::max;
 use std::collections::HashSet;
+use std::io::{self, Read as _};
 
 fn main() {
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // macro_rules! read {
-    //     ([$t:tt; $n:expr]) => {
-    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
-    //     };
-    //     (($($t:tt),+)) => {
-    //         ($(read!($t)),*)
-    //     };
-    //     (_1based) => {
-    //         read!(usize) - 1
-    //     };
-    //     (_bytes) => {
-    //         read!(String).into_bytes()
-    //     };
-    //     ($ty:ty) => {
-    //         input.next().unwrap().parse::<$ty>().unwrap()
-    //     };
-    // }
-    //
-    // let (n, m) = read!((usize, usize));
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    defmac!(read => input.next().unwrap().parse().unwrap());
 
-    use proconio::input;
-
-    input! {
-        a: usize,
-        b: usize,
-    }
+    let (a, b): (usize, usize) = (read!(), read!());
 
     // サンプルケースでしか試してないので嘘かもしれない。
 
diff --git a/examples/apg4b-a.rs b/examples/apg4b-a.rs
index ef23780..41e2673 100644
--- a/examples/apg4b-a.rs
+++ b/examples/apg4b-a.rs
@@ -1,3 +1,5 @@
+// https://atcoder.jp/contests/APG4b/tasks/APG4b_a
+
 use aho_corasick as _;
 use alga as _;
 use approx as _;
diff --git a/examples/apg4b-ex25.rs b/examples/apg4b-ex25.rs
index a19484e..81e2cd1 100644
--- a/examples/apg4b-ex25.rs
+++ b/examples/apg4b-ex25.rs
@@ -1,50 +1,41 @@
 // https://atcoder.jp/contests/APG4b/tasks/APG4b_bx
 
+#![allow(clippy::many_single_char_names)]
+
 use fixedbitset::FixedBitSet;
 use itertools::Itertools as _;
 
-fn main() {
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // macro_rules! read {
-    //      ([$t:tt; $n:expr]) => {
-    //          (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
-    //      };
-    //      (($($t:tt),+)) => {
-    //          ($(read!($t)),*)
-    //      };
-    //      (_1based) => {
-    //          read!(usize) - 1
-    //      };
-    //      (_bytes) => {
-    //          read!(String).into_bytes()
-    //      };
-    //      ($ty:ty) => {
-    //          input.next().unwrap().parse::<$ty>().unwrap()
-    //      };
-    //  }
-    //
-    // let n = read!(usize);
-    // let a = read!([usize; n]);
-    // let m = read!(usize);
-    // let b = read!([usize; m]);
-    // let arg0 = read!(String);
-    // let args = read!([usize; if arg0 == "subtract" { 1 } else { 0 }]);
-
-    use proconio::input;
+use std::io::{self, Read as _};
 
-    input! {
-        n: usize,
-        a: [usize; n],
-        m: usize,
-        b: [usize; m],
-        arg0: String,
-        args: [usize; if arg0 == "subtract" { 1 } else { 0 }],
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules! read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        (_bytes) => {
+            read!(String).into_bytes()
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
     }
 
+    let n = read!(usize);
+    let a = read!([usize; n]);
+    let m = read!(usize);
+    let b = read!([usize; m]);
+    let arg0 = read!(String);
+    let args = read!([usize; if arg0 == "subtract" { 1 } else { 0 }]);
+
     let (a, b) = (a.into_iter().collect(), b.into_iter().collect());
 
     print_set(&match (&*arg0, &*args) {
diff --git a/examples/arc065-c.rs b/examples/arc065-c.rs
index 46eb475..61c7395 100644
--- a/examples/arc065-c.rs
+++ b/examples/arc065-c.rs
@@ -3,39 +3,13 @@
 use lazy_static::lazy_static;
 use regex::bytes::Regex;
 
-#[proconio::fastout]
-fn main() {
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // macro_rules! read {
-    //     ([$t:tt; $n:expr]) => {
-    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
-    //     };
-    //     (($($t:tt),+)) => {
-    //         ($(read!($t)),*)
-    //     };
-    //     (_1based) => {
-    //         read!(usize) - 1
-    //     };
-    //     (_bytes) => {
-    //         read!(String).into_bytes()
-    //     };
-    //     ($ty:ty) => {
-    //         input.next().unwrap().parse::<$ty>().unwrap()
-    //     };
-    // }
-    //
-    // let s = read!(_bytes);
+use std::io::{self, Read as _};
 
-    use proconio::input;
-    use proconio::marker::Bytes;
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
 
-    input! {
-        s: Bytes,
-    }
+    let s = input.trim_end().as_bytes().to_owned();
 
     lazy_static! {
         static ref R: Regex = Regex::new(r"\A(dream(er)?|eraser?)*\z").unwrap();
diff --git a/examples/arc084-c.rs b/examples/arc084-c.rs
index dee0b17..558fd6e 100644
--- a/examples/arc084-c.rs
+++ b/examples/arc084-c.rs
@@ -2,42 +2,33 @@
 
 use superslice::Ext as _;
 
-fn main() {
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // macro_rules! read {
-    //     ([$t:tt; $n:expr]) => {
-    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
-    //     };
-    //     (($($t:tt),+)) => {
-    //         ($(read!($t)),*)
-    //     };
-    //     (_1based) => {
-    //         read!(usize) - 1
-    //     };
-    //     (_bytes) => {
-    //         read!(String).into_bytes()
-    //     };
-    //     ($ty:ty) => {
-    //         input.next().unwrap().parse::<$ty>().unwrap()
-    //     };
-    // }
-    //
-    // let n = read!(n);
-    // let (mut a, b, mut c) = read!(([u32; n], [u32; n], [u32; n]));
-
-    use proconio::input;
+use std::io::{self, Read as _};
 
-    input! {
-        n: usize,
-        mut a: [u32; n],
-        b: [u32; n],
-        mut c: [u32; n],
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules! read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        (_bytes) => {
+            read!(String).into_bytes()
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
     }
 
+    let n = read!(usize);
+    let (mut a, b, mut c) = read!(([u32; n], [u32; n], [u32; n]));
+
     a.sort();
     c.sort();
     let ans = b
diff --git a/examples/atc001-b.rs b/examples/atc001-b.rs
index f630b23..9d16d6a 100644
--- a/examples/atc001-b.rs
+++ b/examples/atc001-b.rs
@@ -1,40 +1,43 @@
+// https://atcoder.jp/contests/atc001/tasks/unionfind_a
+
 use petgraph::unionfind::UnionFind;
 
+use std::io::{self, Read as _};
+
+// `proconio::fastout` does not accept `macro_rules!` until Rust 1.40.
+macro_rules! macro_rules_hack {
+    ($name:ident { $($tt:tt)* }) => {
+        macro_rules! $name {
+            $($tt)*
+        }
+    };
+}
+
 #[proconio::fastout]
 fn main() {
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // macro_rules! read {
-    //     ([$t:tt; $n:expr]) => {
-    //         (0..$n).map(|_| read!($t)).collect::<Vec<_>>()
-    //     };
-    //     (($($t:tt),+)) => {
-    //         ($(read!($t)),*)
-    //     };
-    //     (_1based) => {
-    //         read!(usize) - 1
-    //     };
-    //     (_bytes) => {
-    //         read!(String).into_bytes()
-    //     };
-    //     ($ty:ty) => {
-    //         input.next().unwrap().parse::<$ty>().unwrap()
-    //     };
-    // }
-    //
-    // let (n, q) = read!((usize, usize));
-    // let pabs = read!([(u8, usize, usize); q]);
-
-    use proconio::input;
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules_hack!(read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        (_bytes) => {
+            read!(String).into_bytes()
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
+    });
 
-    input! {
-        n: usize,
-        q: usize,
-        pabs: [(u8, usize, usize); q],
-    }
+    let (n, q) = read!((usize, usize));
+    let pabs = read!([(u8, usize, usize); q]);
 
     let mut uf = UnionFind::new(n);
     for (p, a, b) in pabs {
diff --git a/examples/atc002-b.rs b/examples/atc002-b.rs
index f2a2a7b..741dc70 100644
--- a/examples/atc002-b.rs
+++ b/examples/atc002-b.rs
@@ -1,29 +1,17 @@
 // https://atcoder.jp/contests/atc002/tasks/atc002_b
 
+use defmac::defmac;
 use num::BigUint;
 
-#[proconio::fastout]
-fn main() {
-    // use defmac::defmac;
-    //
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // defmac!(read => input.next().unwrap().parse().unwrap());
-    //
-    // let n: BigUint = read!();
-    // let m: BigUint = read!();
-    // let p: BigUint = read!();
+use std::io::{self, Read as _};
 
-    use proconio::input;
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    defmac!(read => input.next().unwrap().parse().unwrap());
 
-    input! {
-        n: BigUint,
-        m: BigUint,
-        p: BigUint,
-    }
+    let (n, m, p): (BigUint, BigUint, BigUint) = (read!(), read!(), read!());
 
     println!("{}", n.modpow(&p, &m));
 }
diff --git a/examples/practice-a.rs b/examples/practice-a.rs
index 21a65b4..2e0d659 100644
--- a/examples/practice-a.rs
+++ b/examples/practice-a.rs
@@ -1,26 +1,16 @@
 // https://atcoder.jp/contests/practice/tasks/practice_1
 
-#[proconio::fastout]
-fn main() {
-    // use defmac::defmac;
-    //
-    // use std::io::{self, Read as _};
-    //
-    // let mut input = "".to_owned();
-    // io::stdin().read_to_string(&mut input).unwrap();
-    // let mut input = input.split_whitespace();
-    // defmac!(read => input.next().unwrap().parse().unwrap());
-    //
-    // let (a, b, c, s): (u32, u32, u32, String) = (read!(), read!(), read!(), read!());
+use defmac::defmac;
+
+use std::io::{self, Read as _};
 
-    use proconio::input;
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    defmac!(read => input.next().unwrap().parse().unwrap());
 
-    input! {
-        a: u32,
-        b: u32,
-        c: u32,
-        s: String,
-    }
+    let (a, b, c, s): (u32, u32, u32, String) = (read!(), read!(), read!(), read!());
 
     println!("{} {}", a + b + c, s);
 }

From 833ebabfc5034c3d736d609822b8ede9d2fc634c Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 20 Dec 2019 20:04:57 +0900
Subject: [PATCH 08/39] Move ./examples/tests.ron to
 ./test-with-generated-opts.toml

---
 examples/tests.ron                         | 75 ----------------------
 test-with-generated-opts.toml              | 70 ++++++++++++++++++++
 tools/test-with-generated-opts/Cargo.toml  |  2 +-
 tools/test-with-generated-opts/src/main.rs | 22 ++++---
 4 files changed, 85 insertions(+), 84 deletions(-)
 delete mode 100644 examples/tests.ron
 create mode 100644 test-with-generated-opts.toml

diff --git a/examples/tests.ron b/examples/tests.ron
deleted file mode 100644
index ffb64b9..0000000
--- a/examples/tests.ron
+++ /dev/null
@@ -1,75 +0,0 @@
-// 手元でDropboxのテストケース（ある場合）で確認し、サンプルに含まれていないやつが大きいときはそれらをGitに入れない。
-// その場合CI上でもサンプルだけテストする。（Dropboxから引っ張るのも面倒だし何より誰のアカウントを使うかという問題がある）
-
-(
-    tests: {
-        "apg4b-a": (
-            name: "APG4b: A - 1.00.はじめに",
-            matching: Exact,
-        ),
-        "apg4b-ex25": (
-            name: "APG4b: EX25 - 集合の操作 / 3.05",
-            matching: Words,
-        ),
-        "apg4b-ex26": (
-            name: "APG4b: EX26 - 電卓を作ろう3 / 3.06",
-            matching: Exact,
-        ),
-        "practice-a": (
-            name: "practice contest: A - Welcome to AtCoder",
-            matching: Words,
-        ),
-        "atc001-b": (
-            name: "ATC001: B - Union Find",
-            matching: Words,
-        ),
-        "atc002-b": (
-            name: "ATC002: B - n^p mod m",
-            matching: Words,
-        ),
-        "arc065-c": (
-            name: "ABC049 / ARC065: C - 白昼夢 / Daydream",
-            matching: Words,
-        ),
-        "abc054-c": (
-            name: "ABC054: C - One-stroke Path",
-            matching: Words,
-        ),
-        "abc057-b": (
-            name: "ABC057: B - Checkpoints",
-            matching: Words,
-        ),
-        "arc084-c": (
-            name: "ABC077 / ARC084: C - Snuke Festival",
-            matching: Words,
-        ),
-        "abc084-d": (
-            name: "ABC084: D - 2017-like Number",
-            matching: Words,
-        ),
-        "abc118-b": (
-            name: "ABC118: B - Foods Loved by Everyone",
-            matching: Words,
-        ),
-        "abc120-d": (
-            name: "ABC120: D - Decayed Bridges",
-            matching: Words,
-        ),
-        "abc121-b": (
-            name: "ABC121: B - Can you solve this?",
-            matching: Words,
-        ),
-        "abc129-f": (
-            name: "ABC129: F - Takahashi's Basics in Education and Learning",
-            matching: Words,
-        ),
-        "abc142-d": (
-            name: "ABC142: D - Disjoint Set of Common Divisors",
-            matching: Words,
-        ),
-        "abc144-d": (
-            name: "ABC144: D - Water Bottle",
-            matching: FloatOr(abs: 1e-6, rel: 1e-6),
-        ),
-    }
-)
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
new file mode 100644
index 0000000..7ec1d23
--- /dev/null
+++ b/test-with-generated-opts.toml
@@ -0,0 +1,70 @@
+# 手元でDropboxのテストケース（ある場合）で確認し、サンプルに含まれていないやつが大きいときはそれらをGitに入れない。
+# その場合CI上でもサンプルだけテストする。（Dropboxから引っ張るのも面倒だし何より誰のアカウントを使うかという問題がある）
+
+[tests.abc054-c]
+name = "ABC054: C - One-stroke Path"
+matching = "Words"
+
+[tests.abc057-b]
+name = "ABC057: B - Checkpoints"
+matching = "Words"
+
+[tests.abc084-d]
+name = "ABC084: D - 2017-like Number"
+matching = "Words"
+
+[tests.abc118-b]
+name = "ABC118: B - Foods Loved by Everyone"
+matching = "Words"
+
+[tests.abc120-d]
+name = "ABC120: D - Decayed Bridges"
+matching = "Words"
+
+[tests.abc121-b]
+name = "ABC121: B - Can you solve this?"
+matching = "Words"
+
+[tests.abc129-f]
+name = "ABC129: F - Takahashi's Basics in Education and Learning"
+matching = "Words"
+
+[tests.abc142-d]
+name = "ABC142: D - Disjoint Set of Common Divisors"
+matching = "Words"
+
+[tests.abc144-d]
+name = "ABC144: D - Water Bottle"
+matching = { FloatOr = { abs = 1e-6, rel = 1e-6 } }
+
+[tests.apg4b-a]
+name = "APG4b: A - 1.00.はじめに"
+matching = "Exact"
+
+[tests.apg4b-ex25]
+name = "APG4b: EX25 - 集合の操作 / 3.05"
+matching = "Words"
+
+[tests.apg4b-ex26]
+name = "APG4b: EX26 - 電卓を作ろう3 / 3.06"
+matching = "Exact"
+
+[tests.arc065-c]
+name = "ABC049 / ARC065: C - 白昼夢 / Daydream"
+matching = "Words"
+
+[tests.arc084-c]
+name = "ABC077 / ARC084: C - Snuke Festival"
+matching = "Words"
+
+[tests.atc001-b]
+name = "ATC001: B - Union Find"
+matching = "Words"
+
+[tests.atc002-b]
+name = "ATC002: B - n^p mod m"
+matching = "Words"
+
+[tests.practice-a]
+name = "practice contest: A - Welcome to AtCoder"
+matching = "Words"
diff --git a/tools/test-with-generated-opts/Cargo.toml b/tools/test-with-generated-opts/Cargo.toml
index abd5a7a..2f03bcf 100644
--- a/tools/test-with-generated-opts/Cargo.toml
+++ b/tools/test-with-generated-opts/Cargo.toml
@@ -12,10 +12,10 @@ env_logger = "0.7.1"
 indexmap = { version = "1.3.0", features = ["serde-1"] }
 itertools = "0.8.2"
 log = "0.4.8"
-ron = "0.5.1"
 serde = { version = "1.0.104", features = ["derive"] }
 serde_json = "1.0.44"
 shell-escape = "0.1.4"
 structopt = "0.3.5"
 tempdir = "0.3.7"
+toml = "0.5.5"
 which = { version = "3.1.0", default-features = false }
diff --git a/tools/test-with-generated-opts/src/main.rs b/tools/test-with-generated-opts/src/main.rs
index e7dfa85..5afb50d 100644
--- a/tools/test-with-generated-opts/src/main.rs
+++ b/tools/test-with-generated-opts/src/main.rs
@@ -9,20 +9,26 @@ use structopt::StructOpt;
 use tempdir::TempDir;
 
 use std::collections::{BTreeMap, HashMap};
-use std::env;
-use std::f64;
 use std::ffi::{OsStr, OsString};
-use std::fs::{self, File};
 use std::io::{self, Read as _, Write as _};
 use std::path::{Path, PathBuf};
 use std::process::{Command, Output, Stdio};
 use std::time::Instant;
+use std::{env, f64, fs};
 
 #[derive(StructOpt, Debug)]
-struct Opt {}
+struct Opt {
+    #[structopt(
+        long,
+        value_name("PATH"),
+        default_value("./test-with-generated-opts.toml"),
+        help("Path to the config")
+    )]
+    config: PathBuf,
+}
 
 fn main() -> anyhow::Result<()> {
-    Opt::from_args();
+    let Opt { config } = Opt::from_args();
 
     env_logger::builder()
         .format(|buf, record| {
@@ -48,10 +54,10 @@ fn main() -> anyhow::Result<()> {
         .filter_module("test_with_generated_opts", LevelFilter::Info)
         .init();
 
-    let Tests { tests } = File::open("./examples/tests.ron")
+    let Tests { tests } = fs::read_to_string(&config)
         .map_err(anyhow::Error::from)
-        .and_then(|h| ron::de::from_reader(h).map_err(Into::into))
-        .with_context(|| "Failed to read ./examples/tests.ron")?;
+        .and_then(|s| toml::from_str(&s).map_err(Into::into))
+        .with_context(|| format!("Failed to read {}", config.display()))?;
 
     let tempdir = TempDir::new("atcoder-rust-base-test-with-generated-opts")?;
 

From af6176b59b73c84bf00bb7b13907c1129d0647ca Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 20 Dec 2019 22:50:48 +0900
Subject: [PATCH 09/39] Modify the format of test-with-generated-opts.toml

---
 test-with-generated-opts.toml              | 51 ++++++++++-----
 tools/test-with-generated-opts/src/main.rs | 75 ++++++++++++++--------
 2 files changed, 83 insertions(+), 43 deletions(-)

diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 7ec1d23..5b31d6a 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -1,70 +1,87 @@
 # 手元でDropboxのテストケース（ある場合）で確認し、サンプルに含まれていないやつが大きいときはそれらをGitに入れない。
 # その場合CI上でもサンプルだけテストする。（Dropboxから引っ張るのも面倒だし何より誰のアカウントを使うかという問題がある）
 
-[tests.abc054-c]
+[examples.abc054-c]
 name = "ABC054: C - One-stroke Path"
+url = "https://atcoder.jp/contests/abc054/tasks/abc054_c"
 matching = "Words"
 
-[tests.abc057-b]
+[examples.abc057-b]
 name = "ABC057: B - Checkpoints"
+url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
 matching = "Words"
 
-[tests.abc084-d]
+[examples.abc084-d]
 name = "ABC084: D - 2017-like Number"
+url = "https://atcoder.jp/contests/abc084/tasks/abc084_d"
 matching = "Words"
 
-[tests.abc118-b]
+[examples.abc118-b]
 name = "ABC118: B - Foods Loved by Everyone"
+url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
 matching = "Words"
 
-[tests.abc120-d]
+[examples.abc120-d]
 name = "ABC120: D - Decayed Bridges"
+url = "https://atcoder.jp/contests/abc120/tasks/abc120_d"
 matching = "Words"
 
-[tests.abc121-b]
+[examples.abc121-b]
 name = "ABC121: B - Can you solve this?"
+url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
 matching = "Words"
 
-[tests.abc129-f]
+[examples.abc129-f]
 name = "ABC129: F - Takahashi's Basics in Education and Learning"
+url = "https://atcoder.jp/contests/abc129/tasks/abc129_f"
 matching = "Words"
 
-[tests.abc142-d]
+[examples.abc142-d]
 name = "ABC142: D - Disjoint Set of Common Divisors"
+url = "https://atcoder.jp/contests/abc142/tasks/abc142_d"
 matching = "Words"
 
-[tests.abc144-d]
+[examples.abc144-d]
 name = "ABC144: D - Water Bottle"
+url = "https://atcoder.jp/contests/abc144/tasks/abc144_d"
 matching = { FloatOr = { abs = 1e-6, rel = 1e-6 } }
 
-[tests.apg4b-a]
+[examples.apg4b-a]
 name = "APG4b: A - 1.00.はじめに"
+url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_a"
 matching = "Exact"
 
-[tests.apg4b-ex25]
+[examples.apg4b-ex25]
 name = "APG4b: EX25 - 集合の操作 / 3.05"
+url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_bx"
 matching = "Words"
 
-[tests.apg4b-ex26]
+[examples.apg4b-ex26]
 name = "APG4b: EX26 - 電卓を作ろう3 / 3.06"
+url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_bw"
 matching = "Exact"
 
-[tests.arc065-c]
+[examples.arc065-c]
 name = "ABC049 / ARC065: C - 白昼夢 / Daydream"
+url = "https://atcoder.jp/contests/arc065/tasks/arc065_a"
 matching = "Words"
 
-[tests.arc084-c]
+[examples.arc084-c]
 name = "ABC077 / ARC084: C - Snuke Festival"
+url = "https://atcoder.jp/contests/arc084/tasks/arc084_a"
 matching = "Words"
 
-[tests.atc001-b]
+[examples.atc001-b]
 name = "ATC001: B - Union Find"
+url = "https://atcoder.jp/contests/atc001/tasks/unionfind_a"
 matching = "Words"
 
-[tests.atc002-b]
+[examples.atc002-b]
 name = "ATC002: B - n^p mod m"
+url = "https://atcoder.jp/contests/atc002/tasks/atc002_b"
 matching = "Words"
 
-[tests.practice-a]
+[examples.practice-a]
 name = "practice contest: A - Welcome to AtCoder"
+url = "https://atcoder.jp/contests/practice/tasks/practice_1"
 matching = "Words"
diff --git a/tools/test-with-generated-opts/src/main.rs b/tools/test-with-generated-opts/src/main.rs
index 5afb50d..0cae21a 100644
--- a/tools/test-with-generated-opts/src/main.rs
+++ b/tools/test-with-generated-opts/src/main.rs
@@ -54,25 +54,34 @@ fn main() -> anyhow::Result<()> {
         .filter_module("test_with_generated_opts", LevelFilter::Info)
         .init();
 
-    let Tests { tests } = fs::read_to_string(&config)
+    let Config { examples } = fs::read_to_string(&config)
         .map_err(anyhow::Error::from)
         .and_then(|s| toml::from_str(&s).map_err(Into::into))
         .with_context(|| format!("Failed to read {}", config.display()))?;
 
     let tempdir = TempDir::new("atcoder-rust-base-test-with-generated-opts")?;
 
-    let tests = tests
+    let tests = examples
         .into_iter()
-        .map(|(slug, Test { name, matching })| {
-            let src = Path::new("./examples").join(&slug).with_extension("rs");
-            let testsets = Path::new("./examples/testsets").join(&slug);
-            let binary = compile(&src, tempdir.path(), &slug)?;
-            Ok((name, matching, testsets, binary))
-        })
+        .map(
+            |(
+                slug,
+                Example {
+                    name,
+                    url,
+                    matching,
+                },
+            )| {
+                let src = Path::new("./examples").join(&slug).with_extension("rs");
+                let testsets = Path::new("./examples/testsets").join(&slug);
+                let binary = compile(&src, tempdir.path(), &slug)?;
+                Ok((name, url, matching, testsets, binary))
+            },
+        )
         .collect::<anyhow::Result<Vec<_>>>()?;
 
-    for (name, matching, testsets, binary) in tests {
-        test(&name, matching, &testsets, &binary)?;
+    for (name, url, matching, testsets, binary) in tests {
+        test(&name, &url, matching, &testsets, &binary)?;
     }
     Ok(())
 }
@@ -142,20 +151,31 @@ fn compile(src: &Path, tempdir: &Path, dir_name: &str) -> anyhow::Result<PathBuf
     Ok(out)
 }
 
-fn test(task_name: &str, matching: Matching, testsets: &Path, binary: &Path) -> anyhow::Result<()> {
+fn test(
+    task_name: &str,
+    url: &str,
+    matching: Matching,
+    testsets: &Path,
+    binary: &Path,
+) -> anyhow::Result<()> {
     let testsets = {
-        let find_files = |dir: &str| -> _ {
-            fs::read_dir(testsets.join(dir))?
-                .map(|entry| {
-                    let path = entry?.path();
-                    let name = path
-                        .file_stem()
-                        .unwrap_or_default()
-                        .to_string_lossy()
-                        .into_owned();
-                    Ok((name, path))
+        let find_files = |dir_file_name: &str| -> _ {
+            let dir = testsets.join(dir_file_name);
+            fs::read_dir(&dir)
+                .and_then(|read_dir| {
+                    read_dir
+                        .map(|entry| {
+                            let path = entry?.path();
+                            let name = path
+                                .file_stem()
+                                .unwrap_or_default()
+                                .to_string_lossy()
+                                .into_owned();
+                            Ok((name, path))
+                        })
+                        .collect::<io::Result<HashMap<_, _>>>()
                 })
-                .collect::<io::Result<HashMap<_, _>>>()
+                .with_context(|| format!("Failed to read {}", dir.display()))
         };
 
         let (ins, outs) = (find_files("in")?, find_files("out")?);
@@ -168,7 +188,9 @@ fn test(task_name: &str, matching: Matching, testsets: &Path, binary: &Path) ->
             .collect::<BTreeMap<_, _>>()
     };
 
-    info!("Testing {} for {:?}", binary.display(), task_name);
+    info!("Testing {}", binary.display());
+    info!("  Name: {:?}", task_name);
+    info!("  URL: {}", url);
 
     for (test_name, (path_in, path_out)) in testsets {
         fn read_to_string(path: &Path) -> anyhow::Result<String> {
@@ -218,13 +240,14 @@ fn test(task_name: &str, matching: Matching, testsets: &Path, binary: &Path) ->
 }
 
 #[derive(Debug, Deserialize)]
-struct Tests {
-    tests: IndexMap<String, Test>,
+struct Config {
+    examples: IndexMap<String, Example>,
 }
 
 #[derive(Debug, Deserialize)]
-struct Test {
+struct Example {
     name: String,
+    url: String,
     matching: Matching,
 }
 

From b43ac7eb285eae667acab3550b85f7fb888b2124 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sat, 21 Dec 2019 00:11:14 +0900
Subject: [PATCH 10/39] Remove `practice-a` from the examples

---
 examples/practice-a.rs                           | 16 ----------------
 examples/testsets/practice-a/in/00_sample_1.txt  |  3 ---
 examples/testsets/practice-a/in/00_sample_2.txt  |  3 ---
 examples/testsets/practice-a/out/00_sample_1.txt |  1 -
 examples/testsets/practice-a/out/00_sample_2.txt |  1 -
 test-with-generated-opts.toml                    |  5 -----
 6 files changed, 29 deletions(-)
 delete mode 100644 examples/practice-a.rs
 delete mode 100644 examples/testsets/practice-a/in/00_sample_1.txt
 delete mode 100644 examples/testsets/practice-a/in/00_sample_2.txt
 delete mode 100644 examples/testsets/practice-a/out/00_sample_1.txt
 delete mode 100644 examples/testsets/practice-a/out/00_sample_2.txt

diff --git a/examples/practice-a.rs b/examples/practice-a.rs
deleted file mode 100644
index 2e0d659..0000000
--- a/examples/practice-a.rs
+++ /dev/null
@@ -1,16 +0,0 @@
-// https://atcoder.jp/contests/practice/tasks/practice_1
-
-use defmac::defmac;
-
-use std::io::{self, Read as _};
-
-fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
-    defmac!(read => input.next().unwrap().parse().unwrap());
-
-    let (a, b, c, s): (u32, u32, u32, String) = (read!(), read!(), read!(), read!());
-
-    println!("{} {}", a + b + c, s);
-}
diff --git a/examples/testsets/practice-a/in/00_sample_1.txt b/examples/testsets/practice-a/in/00_sample_1.txt
deleted file mode 100644
index b75af29..0000000
--- a/examples/testsets/practice-a/in/00_sample_1.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-1
-2 3
-test
diff --git a/examples/testsets/practice-a/in/00_sample_2.txt b/examples/testsets/practice-a/in/00_sample_2.txt
deleted file mode 100644
index a4250ca..0000000
--- a/examples/testsets/practice-a/in/00_sample_2.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-72
-128 256
-myonmyon
diff --git a/examples/testsets/practice-a/out/00_sample_1.txt b/examples/testsets/practice-a/out/00_sample_1.txt
deleted file mode 100644
index 58fffac..0000000
--- a/examples/testsets/practice-a/out/00_sample_1.txt
+++ /dev/null
@@ -1 +0,0 @@
-6 test
diff --git a/examples/testsets/practice-a/out/00_sample_2.txt b/examples/testsets/practice-a/out/00_sample_2.txt
deleted file mode 100644
index a5c645d..0000000
--- a/examples/testsets/practice-a/out/00_sample_2.txt
+++ /dev/null
@@ -1 +0,0 @@
-456 myonmyon
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 5b31d6a..ce4670f 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -80,8 +80,3 @@ matching = "Words"
 name = "ATC002: B - n^p mod m"
 url = "https://atcoder.jp/contests/atc002/tasks/atc002_b"
 matching = "Words"
-
-[examples.practice-a]
-name = "practice contest: A - Welcome to AtCoder"
-url = "https://atcoder.jp/contests/practice/tasks/practice_1"
-matching = "Words"

From ed595a605f21dd9c15b8d4b72eb3c5abc844a314 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sat, 21 Dec 2019 19:21:41 +0900
Subject: [PATCH 11/39] Scrape sample cases from AtCoder

---
 .github/workflows/ci.yml                      |   4 +-
 examples/testsets/abc054-c/in/sample_01.txt   |   4 -
 examples/testsets/abc054-c/in/sample_02.txt   |   8 -
 examples/testsets/abc054-c/out/sample_01.txt  |   1 -
 examples/testsets/abc054-c/out/sample_02.txt  |   1 -
 examples/testsets/abc057-b/in/sample_01.txt   |   5 -
 examples/testsets/abc057-b/in/sample_02.txt   |   8 -
 examples/testsets/abc057-b/in/sample_03.txt   |  11 -
 examples/testsets/abc057-b/out/sample_01.txt  |   2 -
 examples/testsets/abc057-b/out/sample_02.txt  |   3 -
 examples/testsets/abc057-b/out/sample_03.txt  |   5 -
 examples/testsets/abc084-d/in/sample_01.txt   |   2 -
 examples/testsets/abc084-d/in/sample_02.txt   |   5 -
 examples/testsets/abc084-d/in/sample_03.txt   |   7 -
 examples/testsets/abc084-d/out/sample_01.txt  |   1 -
 examples/testsets/abc084-d/out/sample_02.txt  |   4 -
 examples/testsets/abc084-d/out/sample_03.txt  |   6 -
 examples/testsets/abc118-b/in/sample_01.txt   |   4 -
 examples/testsets/abc118-b/in/sample_02.txt   |   6 -
 examples/testsets/abc118-b/in/sample_03.txt   |   2 -
 examples/testsets/abc118-b/out/sample_01.txt  |   1 -
 examples/testsets/abc118-b/out/sample_02.txt  |   1 -
 examples/testsets/abc118-b/out/sample_03.txt  |   1 -
 examples/testsets/abc120-d/in/sample_01.txt   |   6 -
 examples/testsets/abc120-d/in/sample_02.txt   |   6 -
 examples/testsets/abc120-d/in/sample_03.txt   |   2 -
 examples/testsets/abc120-d/out/sample_01.txt  |   5 -
 examples/testsets/abc120-d/out/sample_02.txt  |   5 -
 examples/testsets/abc120-d/out/sample_03.txt  |   1 -
 examples/testsets/abc121-b/in/sample_01.txt   |   4 -
 examples/testsets/abc121-b/in/sample_02.txt   |   7 -
 examples/testsets/abc121-b/in/sample_03.txt   |   5 -
 examples/testsets/abc121-b/out/sample_01.txt  |   1 -
 examples/testsets/abc121-b/out/sample_02.txt  |   1 -
 examples/testsets/abc121-b/out/sample_03.txt  |   1 -
 examples/testsets/abc129-f/in/sample_01.txt   |   1 -
 examples/testsets/abc129-f/in/sample_02.txt   |   1 -
 examples/testsets/abc129-f/in/sample_03.txt   |   1 -
 .../testsets/abc129-f/in/sub1_killer_01.txt   |   1 -
 .../testsets/abc129-f/in/sub1_killer_02.txt   |   1 -
 .../testsets/abc129-f/in/sub1_killer_03.txt   |   1 -
 .../testsets/abc129-f/in/sub1_killer_04.txt   |   1 -
 .../testsets/abc129-f/in/sub1_killer_05.txt   |   1 -
 .../testsets/abc129-f/in/sub1_killer_06.txt   |   1 -
 .../testsets/abc129-f/in/sub1_killer_07.txt   |   1 -
 .../testsets/abc129-f/in/sub1_large_01.txt    |   1 -
 .../testsets/abc129-f/in/sub1_large_02.txt    |   1 -
 .../testsets/abc129-f/in/sub1_large_03.txt    |   1 -
 .../testsets/abc129-f/in/sub1_large_04.txt    |   1 -
 .../testsets/abc129-f/in/sub1_large_05.txt    |   1 -
 .../testsets/abc129-f/in/sub1_large_06.txt    |   1 -
 .../testsets/abc129-f/in/sub1_large_07.txt    |   1 -
 .../testsets/abc129-f/in/sub1_large_08.txt    |   1 -
 .../testsets/abc129-f/in/sub1_large_09.txt    |   1 -
 .../testsets/abc129-f/in/sub1_rand_01.txt     |   1 -
 .../testsets/abc129-f/in/sub1_rand_02.txt     |   1 -
 .../testsets/abc129-f/in/sub1_rand_03.txt     |   1 -
 .../testsets/abc129-f/in/sub1_rand_04.txt     |   1 -
 .../testsets/abc129-f/in/sub1_rand_05.txt     |   1 -
 .../testsets/abc129-f/in/sub1_rand_06.txt     |   1 -
 .../testsets/abc129-f/in/sub1_rand_07.txt     |   1 -
 .../testsets/abc129-f/in/sub1_rand_08.txt     |   1 -
 .../testsets/abc129-f/in/sub1_rand_09.txt     |   1 -
 .../testsets/abc129-f/in/sub1_rand_10.txt     |   1 -
 .../testsets/abc129-f/in/sub1_small_01.txt    |   1 -
 .../testsets/abc129-f/in/sub1_small_02.txt    |   1 -
 .../testsets/abc129-f/in/sub1_small_03.txt    |   1 -
 .../testsets/abc129-f/in/sub1_small_04.txt    |   1 -
 .../testsets/abc129-f/in/sub1_small_05.txt    |   1 -
 .../testsets/abc129-f/in/sub1_small_06.txt    |   1 -
 examples/testsets/abc129-f/out/sample_01.txt  |   1 -
 examples/testsets/abc129-f/out/sample_02.txt  |   1 -
 examples/testsets/abc129-f/out/sample_03.txt  |   1 -
 .../testsets/abc129-f/out/sub1_killer_01.txt  |   1 -
 .../testsets/abc129-f/out/sub1_killer_02.txt  |   1 -
 .../testsets/abc129-f/out/sub1_killer_03.txt  |   1 -
 .../testsets/abc129-f/out/sub1_killer_04.txt  |   1 -
 .../testsets/abc129-f/out/sub1_killer_05.txt  |   1 -
 .../testsets/abc129-f/out/sub1_killer_06.txt  |   1 -
 .../testsets/abc129-f/out/sub1_killer_07.txt  |   1 -
 .../testsets/abc129-f/out/sub1_large_01.txt   |   1 -
 .../testsets/abc129-f/out/sub1_large_02.txt   |   1 -
 .../testsets/abc129-f/out/sub1_large_03.txt   |   1 -
 .../testsets/abc129-f/out/sub1_large_04.txt   |   1 -
 .../testsets/abc129-f/out/sub1_large_05.txt   |   1 -
 .../testsets/abc129-f/out/sub1_large_06.txt   |   1 -
 .../testsets/abc129-f/out/sub1_large_07.txt   |   1 -
 .../testsets/abc129-f/out/sub1_large_08.txt   |   1 -
 .../testsets/abc129-f/out/sub1_large_09.txt   |   1 -
 .../testsets/abc129-f/out/sub1_rand_01.txt    |   1 -
 .../testsets/abc129-f/out/sub1_rand_02.txt    |   1 -
 .../testsets/abc129-f/out/sub1_rand_03.txt    |   1 -
 .../testsets/abc129-f/out/sub1_rand_04.txt    |   1 -
 .../testsets/abc129-f/out/sub1_rand_05.txt    |   1 -
 .../testsets/abc129-f/out/sub1_rand_06.txt    |   1 -
 .../testsets/abc129-f/out/sub1_rand_07.txt    |   1 -
 .../testsets/abc129-f/out/sub1_rand_08.txt    |   1 -
 .../testsets/abc129-f/out/sub1_rand_09.txt    |   1 -
 .../testsets/abc129-f/out/sub1_rand_10.txt    |   1 -
 .../testsets/abc129-f/out/sub1_small_01.txt   |   1 -
 .../testsets/abc129-f/out/sub1_small_02.txt   |   1 -
 .../testsets/abc129-f/out/sub1_small_03.txt   |   1 -
 .../testsets/abc129-f/out/sub1_small_04.txt   |   1 -
 .../testsets/abc129-f/out/sub1_small_05.txt   |   1 -
 .../testsets/abc129-f/out/sub1_small_06.txt   |   1 -
 examples/testsets/abc142-d/in/sample_01.txt   |   1 -
 examples/testsets/abc142-d/in/sample_02.txt   |   1 -
 examples/testsets/abc142-d/in/sample_03.txt   |   1 -
 examples/testsets/abc142-d/out/sample_01.txt  |   1 -
 examples/testsets/abc142-d/out/sample_02.txt  |   1 -
 examples/testsets/abc142-d/out/sample_03.txt  |   1 -
 examples/testsets/abc144-d/in/handmade03.txt  |   1 -
 examples/testsets/abc144-d/in/handmade04.txt  |   1 -
 examples/testsets/abc144-d/in/random05.txt    |   1 -
 examples/testsets/abc144-d/in/random06.txt    |   1 -
 examples/testsets/abc144-d/in/random07.txt    |   1 -
 examples/testsets/abc144-d/in/random08.txt    |   1 -
 examples/testsets/abc144-d/in/random09.txt    |   1 -
 examples/testsets/abc144-d/in/random10.txt    |   1 -
 examples/testsets/abc144-d/in/random11.txt    |   1 -
 examples/testsets/abc144-d/in/random12.txt    |   1 -
 examples/testsets/abc144-d/in/random13.txt    |   1 -
 examples/testsets/abc144-d/in/random14.txt    |   1 -
 examples/testsets/abc144-d/in/sample00.txt    |   1 -
 examples/testsets/abc144-d/in/sample01.txt    |   1 -
 examples/testsets/abc144-d/in/sample02.txt    |   1 -
 examples/testsets/abc144-d/out/handmade03.txt |   1 -
 examples/testsets/abc144-d/out/handmade04.txt |   1 -
 examples/testsets/abc144-d/out/random05.txt   |   1 -
 examples/testsets/abc144-d/out/random06.txt   |   1 -
 examples/testsets/abc144-d/out/random07.txt   |   1 -
 examples/testsets/abc144-d/out/random08.txt   |   1 -
 examples/testsets/abc144-d/out/random09.txt   |   1 -
 examples/testsets/abc144-d/out/random10.txt   |   1 -
 examples/testsets/abc144-d/out/random11.txt   |   1 -
 examples/testsets/abc144-d/out/random12.txt   |   1 -
 examples/testsets/abc144-d/out/random13.txt   |   1 -
 examples/testsets/abc144-d/out/random14.txt   |   1 -
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 examples/testsets/apg4b-ex25/in/sample_02.txt |   5 -
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 examples/testsets/apg4b-ex25/in/sample_04.txt |   5 -
 examples/testsets/apg4b-ex25/in/sample_05.txt |   5 -
 examples/testsets/apg4b-ex25/in/sample_06.txt |   5 -
 .../testsets/apg4b-ex25/out/sample_01.txt     |   1 -
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 .../testsets/apg4b-ex25/out/sample_05.txt     |   1 -
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 examples/testsets/apg4b-ex26/in/sample_01.txt |   5 -
 examples/testsets/apg4b-ex26/in/sample_02.txt |   3 -
 examples/testsets/apg4b-ex26/in/sample_03.txt |   2 -
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 .../testsets/apg4b-ex26/out/sample_01.txt     |   2 -
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 examples/testsets/arc065-c/in/subtask0_0.txt  |   1 -
 examples/testsets/arc065-c/in/subtask0_1.txt  |   1 -
 examples/testsets/arc065-c/in/subtask0_2.txt  |   1 -
 examples/testsets/arc065-c/out/subtask0_0.txt |   1 -
 examples/testsets/arc065-c/out/subtask0_1.txt |   1 -
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 examples/testsets/arc084-c/out/s1.txt         |   1 -
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 test-with-generated-opts.toml                 |   7 +-
 tools/test-with-generated-opts/Cargo.toml     |   7 +-
 tools/test-with-generated-opts/src/main.rs    | 509 +++++++++++++++---
 194 files changed, 455 insertions(+), 434 deletions(-)
 delete mode 100644 examples/testsets/abc054-c/in/sample_01.txt
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diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6a5339f..1a5878a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -82,8 +82,8 @@ jobs:
           command: build
           args: --all-features --release
 
-      - name: '`chmod -R a=rX-w ./target`'
-        run: chmod -R a=rX-w ./target
+      - name: '`chmod -R a=rX-w ./target/release`'
+        run: chmod -R a=rX-w ./target/release
 
       - name: '`cargo test-with-generated-opts`'
         uses: actions-rs/cargo@v1
diff --git a/examples/testsets/abc054-c/in/sample_01.txt b/examples/testsets/abc054-c/in/sample_01.txt
deleted file mode 100644
index bc88773..0000000
--- a/examples/testsets/abc054-c/in/sample_01.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-3 3
-1 2
-1 3
-2 3
diff --git a/examples/testsets/abc054-c/in/sample_02.txt b/examples/testsets/abc054-c/in/sample_02.txt
deleted file mode 100644
index 052f07a..0000000
--- a/examples/testsets/abc054-c/in/sample_02.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-7 7
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diff --git a/examples/testsets/abc054-c/out/sample_01.txt b/examples/testsets/abc054-c/out/sample_01.txt
deleted file mode 100644
index 0cfbf08..0000000
--- a/examples/testsets/abc054-c/out/sample_01.txt
+++ /dev/null
@@ -1 +0,0 @@
-2
diff --git a/examples/testsets/abc054-c/out/sample_02.txt b/examples/testsets/abc054-c/out/sample_02.txt
deleted file mode 100644
index d00491f..0000000
--- a/examples/testsets/abc054-c/out/sample_02.txt
+++ /dev/null
@@ -1 +0,0 @@
-1
diff --git a/examples/testsets/abc057-b/in/sample_01.txt b/examples/testsets/abc057-b/in/sample_01.txt
deleted file mode 100644
index c43659a..0000000
--- a/examples/testsets/abc057-b/in/sample_01.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-2 2
-2 0
-0 0
--1 0
-1 0
diff --git a/examples/testsets/abc057-b/in/sample_02.txt b/examples/testsets/abc057-b/in/sample_02.txt
deleted file mode 100644
index 541f6dd..0000000
--- a/examples/testsets/abc057-b/in/sample_02.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-3 4
-10 10
--10 -10
-3 3
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-3 5
diff --git a/examples/testsets/abc057-b/in/sample_03.txt b/examples/testsets/abc057-b/in/sample_03.txt
deleted file mode 100644
index 596121c..0000000
--- a/examples/testsets/abc057-b/in/sample_03.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-5 5
--100000000 -100000000
--100000000 100000000
-100000000 -100000000
-100000000 100000000
-0 0
-0 0
-100000000 100000000
-100000000 -100000000
--100000000 100000000
--100000000 -100000000
diff --git a/examples/testsets/abc057-b/out/sample_01.txt b/examples/testsets/abc057-b/out/sample_01.txt
deleted file mode 100644
index 5f1d0ec..0000000
--- a/examples/testsets/abc057-b/out/sample_01.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-2
-1
diff --git a/examples/testsets/abc057-b/out/sample_02.txt b/examples/testsets/abc057-b/out/sample_02.txt
deleted file mode 100644
index 0571a2e..0000000
--- a/examples/testsets/abc057-b/out/sample_02.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-3
-1
-2
diff --git a/examples/testsets/abc057-b/out/sample_03.txt b/examples/testsets/abc057-b/out/sample_03.txt
deleted file mode 100644
index 86e24d1..0000000
--- a/examples/testsets/abc057-b/out/sample_03.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-5
-4
-3
-2
-1
diff --git a/examples/testsets/abc084-d/in/sample_01.txt b/examples/testsets/abc084-d/in/sample_01.txt
deleted file mode 100644
index 6990404..0000000
--- a/examples/testsets/abc084-d/in/sample_01.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-1
-3 7
diff --git a/examples/testsets/abc084-d/in/sample_02.txt b/examples/testsets/abc084-d/in/sample_02.txt
deleted file mode 100644
index 988378b..0000000
--- a/examples/testsets/abc084-d/in/sample_02.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-4
-13 13
-7 11
-7 11
-2017 2017
diff --git a/examples/testsets/abc084-d/in/sample_03.txt b/examples/testsets/abc084-d/in/sample_03.txt
deleted file mode 100644
index da66f27..0000000
--- a/examples/testsets/abc084-d/in/sample_03.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-6
-1 53
-13 91
-37 55
-19 51
-73 91
-13 49
diff --git a/examples/testsets/abc084-d/out/sample_01.txt b/examples/testsets/abc084-d/out/sample_01.txt
deleted file mode 100644
index 0cfbf08..0000000
--- a/examples/testsets/abc084-d/out/sample_01.txt
+++ /dev/null
@@ -1 +0,0 @@
-2
diff --git a/examples/testsets/abc084-d/out/sample_02.txt b/examples/testsets/abc084-d/out/sample_02.txt
deleted file mode 100644
index 680eb50..0000000
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-1
diff --git a/examples/testsets/abc084-d/out/sample_03.txt b/examples/testsets/abc084-d/out/sample_03.txt
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-1
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diff --git a/examples/testsets/abc129-f/out/sub1_killer_01.txt b/examples/testsets/abc129-f/out/sub1_killer_01.txt
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diff --git a/examples/testsets/abc129-f/out/sub1_killer_05.txt b/examples/testsets/abc129-f/out/sub1_killer_05.txt
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diff --git a/examples/testsets/abc129-f/out/sub1_killer_07.txt b/examples/testsets/abc129-f/out/sub1_killer_07.txt
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-1.9580634609
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-0.1924235310
diff --git a/examples/testsets/abc144-d/out/sample00.txt b/examples/testsets/abc144-d/out/sample00.txt
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-4.2363947991
diff --git a/examples/testsets/apg4b-a/in/sample_01.txt b/examples/testsets/apg4b-a/in/sample_01.txt
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-Hello, world!
diff --git a/examples/testsets/apg4b-ex25/in/sample_01.txt b/examples/testsets/apg4b-ex25/in/sample_01.txt
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-3
-0 1 2
-3
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diff --git a/examples/testsets/apg4b-ex25/in/sample_04.txt b/examples/testsets/apg4b-ex25/in/sample_04.txt
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@@ -1 +0,0 @@
-0 48 49
diff --git a/examples/testsets/apg4b-ex26/in/sample_01.txt b/examples/testsets/apg4b-ex26/in/sample_01.txt
deleted file mode 100644
index c73dcea..0000000
--- a/examples/testsets/apg4b-ex26/in/sample_01.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-4
-int x = 1 + 2 ;
-print_int x + 3 ;
-vec a = [ 1 , 2 , x ] ;
-print_vec a + [ 4 , 5 , 6 ] ;
diff --git a/examples/testsets/apg4b-ex26/in/sample_02.txt b/examples/testsets/apg4b-ex26/in/sample_02.txt
deleted file mode 100644
index 52f5052..0000000
--- a/examples/testsets/apg4b-ex26/in/sample_02.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-2
-print_int 1 - 2 ;
-print_vec [ 1 , 2 , 3 ] - [ 3 , 2 , 1 ] ;
diff --git a/examples/testsets/apg4b-ex26/in/sample_03.txt b/examples/testsets/apg4b-ex26/in/sample_03.txt
deleted file mode 100644
index 9698270..0000000
--- a/examples/testsets/apg4b-ex26/in/sample_03.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-1
-print_int 5 ;
diff --git a/examples/testsets/apg4b-ex26/in/sample_04.txt b/examples/testsets/apg4b-ex26/in/sample_04.txt
deleted file mode 100644
index 58ee2d6..0000000
--- a/examples/testsets/apg4b-ex26/in/sample_04.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-1
-print_vec [ 1 , 2 ] ;
diff --git a/examples/testsets/apg4b-ex26/in/sample_05.txt b/examples/testsets/apg4b-ex26/in/sample_05.txt
deleted file mode 100644
index 0f3f7a4..0000000
--- a/examples/testsets/apg4b-ex26/in/sample_05.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-2
-int x = 1 ;
-print_int x ;
diff --git a/examples/testsets/apg4b-ex26/in/sample_06.txt b/examples/testsets/apg4b-ex26/in/sample_06.txt
deleted file mode 100644
index bca6173..0000000
--- a/examples/testsets/apg4b-ex26/in/sample_06.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-2
-vec a = [ 3 , 4 ] ;
-print_vec a ;
diff --git a/examples/testsets/apg4b-ex26/in/sample_07.txt b/examples/testsets/apg4b-ex26/in/sample_07.txt
deleted file mode 100644
index edbcbb1..0000000
--- a/examples/testsets/apg4b-ex26/in/sample_07.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-4
-int x = 1 ;
-int y = 2 ;
-int z = 3 ;
-print_int x + y + z ;
diff --git a/examples/testsets/apg4b-ex26/in/sample_08.txt b/examples/testsets/apg4b-ex26/in/sample_08.txt
deleted file mode 100644
index 62b13df..0000000
--- a/examples/testsets/apg4b-ex26/in/sample_08.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-4
-vec a = [ 1 , 2 , 3 ] ;
-vec b = [ 4 , 5 , 6 ] ;
-vec c = [ 7 , 8 , 9 ] ;
-print_vec a + b + c ;
diff --git a/examples/testsets/apg4b-ex26/in/sample_09.txt b/examples/testsets/apg4b-ex26/in/sample_09.txt
deleted file mode 100644
index ba24ea5..0000000
--- a/examples/testsets/apg4b-ex26/in/sample_09.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-6
-vec a = [ 1 , 2 ] ;
-vec b = a + [ 3 , 4 ] ;
-vec c = a - [ 5 , 6 ] ;
-print_vec a ;
-print_vec b ;
-print_vec c ;
diff --git a/examples/testsets/apg4b-ex26/out/sample_01.txt b/examples/testsets/apg4b-ex26/out/sample_01.txt
deleted file mode 100644
index e21af7e..0000000
--- a/examples/testsets/apg4b-ex26/out/sample_01.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-6
-[ 5 7 9 ]
diff --git a/examples/testsets/apg4b-ex26/out/sample_02.txt b/examples/testsets/apg4b-ex26/out/sample_02.txt
deleted file mode 100644
index 22e4cf0..0000000
--- a/examples/testsets/apg4b-ex26/out/sample_02.txt
+++ /dev/null
@@ -1,2 +0,0 @@
--1
-[ -2 0 2 ]
diff --git a/examples/testsets/apg4b-ex26/out/sample_03.txt b/examples/testsets/apg4b-ex26/out/sample_03.txt
deleted file mode 100644
index 7ed6ff8..0000000
--- a/examples/testsets/apg4b-ex26/out/sample_03.txt
+++ /dev/null
@@ -1 +0,0 @@
-5
diff --git a/examples/testsets/apg4b-ex26/out/sample_04.txt b/examples/testsets/apg4b-ex26/out/sample_04.txt
deleted file mode 100644
index b4a1e66..0000000
--- a/examples/testsets/apg4b-ex26/out/sample_04.txt
+++ /dev/null
@@ -1 +0,0 @@
-[ 1 2 ]
diff --git a/examples/testsets/apg4b-ex26/out/sample_05.txt b/examples/testsets/apg4b-ex26/out/sample_05.txt
deleted file mode 100644
index d00491f..0000000
--- a/examples/testsets/apg4b-ex26/out/sample_05.txt
+++ /dev/null
@@ -1 +0,0 @@
-1
diff --git a/examples/testsets/apg4b-ex26/out/sample_06.txt b/examples/testsets/apg4b-ex26/out/sample_06.txt
deleted file mode 100644
index b6f6fec..0000000
--- a/examples/testsets/apg4b-ex26/out/sample_06.txt
+++ /dev/null
@@ -1 +0,0 @@
-[ 3 4 ]
diff --git a/examples/testsets/apg4b-ex26/out/sample_07.txt b/examples/testsets/apg4b-ex26/out/sample_07.txt
deleted file mode 100644
index 1e8b314..0000000
--- a/examples/testsets/apg4b-ex26/out/sample_07.txt
+++ /dev/null
@@ -1 +0,0 @@
-6
diff --git a/examples/testsets/apg4b-ex26/out/sample_08.txt b/examples/testsets/apg4b-ex26/out/sample_08.txt
deleted file mode 100644
index b77f265..0000000
--- a/examples/testsets/apg4b-ex26/out/sample_08.txt
+++ /dev/null
@@ -1 +0,0 @@
-[ 12 15 18 ]
diff --git a/examples/testsets/apg4b-ex26/out/sample_09.txt b/examples/testsets/apg4b-ex26/out/sample_09.txt
deleted file mode 100644
index 20db499..0000000
--- a/examples/testsets/apg4b-ex26/out/sample_09.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-[ 1 2 ]
-[ 4 6 ]
-[ -4 -4 ]
diff --git a/examples/testsets/arc065-c/in/subtask0_0.txt b/examples/testsets/arc065-c/in/subtask0_0.txt
deleted file mode 100644
index b2f36c5..0000000
--- a/examples/testsets/arc065-c/in/subtask0_0.txt
+++ /dev/null
@@ -1 +0,0 @@
-erasedream
diff --git a/examples/testsets/arc065-c/in/subtask0_1.txt b/examples/testsets/arc065-c/in/subtask0_1.txt
deleted file mode 100644
index afebb48..0000000
--- a/examples/testsets/arc065-c/in/subtask0_1.txt
+++ /dev/null
@@ -1 +0,0 @@
-dreameraser
diff --git a/examples/testsets/arc065-c/in/subtask0_2.txt b/examples/testsets/arc065-c/in/subtask0_2.txt
deleted file mode 100644
index 621f453..0000000
--- a/examples/testsets/arc065-c/in/subtask0_2.txt
+++ /dev/null
@@ -1 +0,0 @@
-dreamerer
diff --git a/examples/testsets/arc065-c/out/subtask0_0.txt b/examples/testsets/arc065-c/out/subtask0_0.txt
deleted file mode 100644
index f033a50..0000000
--- a/examples/testsets/arc065-c/out/subtask0_0.txt
+++ /dev/null
@@ -1 +0,0 @@
-YES
diff --git a/examples/testsets/arc065-c/out/subtask0_1.txt b/examples/testsets/arc065-c/out/subtask0_1.txt
deleted file mode 100644
index f033a50..0000000
--- a/examples/testsets/arc065-c/out/subtask0_1.txt
+++ /dev/null
@@ -1 +0,0 @@
-YES
diff --git a/examples/testsets/arc065-c/out/subtask0_2.txt b/examples/testsets/arc065-c/out/subtask0_2.txt
deleted file mode 100644
index 5e35d1b..0000000
--- a/examples/testsets/arc065-c/out/subtask0_2.txt
+++ /dev/null
@@ -1 +0,0 @@
-NO
diff --git a/examples/testsets/arc084-c/in/s1.txt b/examples/testsets/arc084-c/in/s1.txt
deleted file mode 100644
index 094d702..0000000
--- a/examples/testsets/arc084-c/in/s1.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-2
-1 5
-2 4
-3 6
diff --git a/examples/testsets/arc084-c/in/s2.txt b/examples/testsets/arc084-c/in/s2.txt
deleted file mode 100644
index a304b91..0000000
--- a/examples/testsets/arc084-c/in/s2.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-3
-1 1 1
-2 2 2
-3 3 3
diff --git a/examples/testsets/arc084-c/in/s3.txt b/examples/testsets/arc084-c/in/s3.txt
deleted file mode 100644
index ad6543d..0000000
--- a/examples/testsets/arc084-c/in/s3.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-6
-3 14 159 2 6 53
-58 9 79 323 84 6
-2643 383 2 79 50 288
diff --git a/examples/testsets/arc084-c/out/s1.txt b/examples/testsets/arc084-c/out/s1.txt
deleted file mode 100644
index 00750ed..0000000
--- a/examples/testsets/arc084-c/out/s1.txt
+++ /dev/null
@@ -1 +0,0 @@
-3
diff --git a/examples/testsets/arc084-c/out/s2.txt b/examples/testsets/arc084-c/out/s2.txt
deleted file mode 100644
index f64f5d8..0000000
--- a/examples/testsets/arc084-c/out/s2.txt
+++ /dev/null
@@ -1 +0,0 @@
-27
diff --git a/examples/testsets/arc084-c/out/s3.txt b/examples/testsets/arc084-c/out/s3.txt
deleted file mode 100644
index 84df352..0000000
--- a/examples/testsets/arc084-c/out/s3.txt
+++ /dev/null
@@ -1 +0,0 @@
-87
diff --git a/examples/testsets/atc001-b/in/00_sample_01.txt b/examples/testsets/atc001-b/in/00_sample_01.txt
deleted file mode 100644
index 632a776..0000000
--- a/examples/testsets/atc001-b/in/00_sample_01.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-8 9
-0 1 2
-0 3 2
-1 1 3
-1 1 4
-0 2 4
-1 4 1
-0 4 2
-0 0 0
-1 0 0
diff --git a/examples/testsets/atc001-b/out/00_sample_01.txt b/examples/testsets/atc001-b/out/00_sample_01.txt
deleted file mode 100644
index df9be86..0000000
--- a/examples/testsets/atc001-b/out/00_sample_01.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-Yes
-No
-Yes
-Yes
diff --git a/examples/testsets/atc002-b/in/sample_01.txt b/examples/testsets/atc002-b/in/sample_01.txt
deleted file mode 100644
index 2065346..0000000
--- a/examples/testsets/atc002-b/in/sample_01.txt
+++ /dev/null
@@ -1 +0,0 @@
-12 15 7
diff --git a/examples/testsets/atc002-b/in/sample_02.txt b/examples/testsets/atc002-b/in/sample_02.txt
deleted file mode 100644
index 0903e42..0000000
--- a/examples/testsets/atc002-b/in/sample_02.txt
+++ /dev/null
@@ -1 +0,0 @@
-123456789 234567894 6574837563712
diff --git a/examples/testsets/atc002-b/out/sample_01.txt b/examples/testsets/atc002-b/out/sample_01.txt
deleted file mode 100644
index 00750ed..0000000
--- a/examples/testsets/atc002-b/out/sample_01.txt
+++ /dev/null
@@ -1 +0,0 @@
-3
diff --git a/examples/testsets/atc002-b/out/sample_02.txt b/examples/testsets/atc002-b/out/sample_02.txt
deleted file mode 100644
index 7ecdf4c..0000000
--- a/examples/testsets/atc002-b/out/sample_02.txt
+++ /dev/null
@@ -1 +0,0 @@
-120678297
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index ce4670f..a0f2832 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -1,5 +1,7 @@
-# 手元でDropboxのテストケース（ある場合）で確認し、サンプルに含まれていないやつが大きいときはそれらをGitに入れない。
-# その場合CI上でもサンプルだけテストする。（Dropboxから引っ張るのも面倒だし何より誰のアカウントを使うかという問題がある）
+# Dropboxからのダウンロードは行なわない。（面倒なのと誰のアカウントを使うかという問題がある）
+
+bin = "./target/test-with-generated-opts/bin/{}"
+testcases = "./target/test-with-generated-opts/testcases/{}"
 
 [examples.abc054-c]
 name = "ABC054: C - One-stroke Path"
@@ -50,6 +52,7 @@ matching = { FloatOr = { abs = 1e-6, rel = 1e-6 } }
 name = "APG4b: A - 1.00.はじめに"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_a"
 matching = "Exact"
+alt_testcases = [{ in = "", out = "Hello, world!\n" }]
 
 [examples.apg4b-ex25]
 name = "APG4b: EX25 - 集合の操作 / 3.05"
diff --git a/tools/test-with-generated-opts/Cargo.toml b/tools/test-with-generated-opts/Cargo.toml
index 2f03bcf..3841904 100644
--- a/tools/test-with-generated-opts/Cargo.toml
+++ b/tools/test-with-generated-opts/Cargo.toml
@@ -12,10 +12,15 @@ env_logger = "0.7.1"
 indexmap = { version = "1.3.0", features = ["serde-1"] }
 itertools = "0.8.2"
 log = "0.4.8"
+nom = "5.0.1"
+once_cell = "1.2.0"
+regex = "1.3.1"
+scraper = "0.11.0"
 serde = { version = "1.0.104", features = ["derive"] }
 serde_json = "1.0.44"
 shell-escape = "0.1.4"
 structopt = "0.3.5"
-tempdir = "0.3.7"
 toml = "0.5.5"
+ureq = "0.11.2"
+url = { version = "2.1.0", features = ["serde"] }
 which = { version = "3.1.0", default-features = false }
diff --git a/tools/test-with-generated-opts/src/main.rs b/tools/test-with-generated-opts/src/main.rs
index 0cae21a..493000f 100644
--- a/tools/test-with-generated-opts/src/main.rs
+++ b/tools/test-with-generated-opts/src/main.rs
@@ -1,18 +1,23 @@
-use anyhow::{anyhow, Context as _};
+use anyhow::{anyhow, ensure, Context as _};
 use approx::{abs_diff_eq, relative_eq};
 use env_logger::fmt::Color;
 use indexmap::IndexMap;
 use itertools::Itertools as _;
 use log::{info, Level, LevelFilter};
-use serde::Deserialize;
+use once_cell::sync::Lazy;
+use regex::Regex;
+use scraper::{Html, Selector};
+use serde::de::DeserializeOwned;
+use serde::{Deserialize, Deserializer};
 use structopt::StructOpt;
-use tempdir::TempDir;
+use url::Url;
 
-use std::collections::{BTreeMap, HashMap};
+use std::collections::BTreeMap;
 use std::ffi::{OsStr, OsString};
 use std::io::{self, Read as _, Write as _};
 use std::path::{Path, PathBuf};
 use std::process::{Command, Output, Stdio};
+use std::str::FromStr;
 use std::time::Instant;
 use std::{env, f64, fs};
 
@@ -54,15 +59,13 @@ fn main() -> anyhow::Result<()> {
         .filter_module("test_with_generated_opts", LevelFilter::Info)
         .init();
 
-    let Config { examples } = fs::read_to_string(&config)
-        .map_err(anyhow::Error::from)
-        .and_then(|s| toml::from_str(&s).map_err(Into::into))
-        .with_context(|| format!("Failed to read {}", config.display()))?;
+    let config = read_toml::<_, Config>(config)?;
 
-    let tempdir = TempDir::new("atcoder-rust-base-test-with-generated-opts")?;
+    scrape_sample_cases(&config)?;
 
-    let tests = examples
-        .into_iter()
+    let tests = config
+        .examples
+        .iter()
         .map(
             |(
                 slug,
@@ -70,23 +73,301 @@ fn main() -> anyhow::Result<()> {
                     name,
                     url,
                     matching,
+                    alt_testcases,
                 },
             )| {
-                let src = Path::new("./examples").join(&slug).with_extension("rs");
-                let testsets = Path::new("./examples/testsets").join(&slug);
-                let binary = compile(&src, tempdir.path(), &slug)?;
-                Ok((name, url, matching, testsets, binary))
+                let testcases = if let Some(alt_testcases) = alt_testcases {
+                    alt_testcases
+                        .iter()
+                        .enumerate()
+                        .map(|(i, c)| ((i + 1).to_string().into(), (c.r#in.clone(), c.out.clone())))
+                        .collect()
+                } else {
+                    load_testcases(&config.testcases.expand(slug))?
+                };
+                let src = Path::new("./examples").join(slug).with_extension("rs");
+                let bin = config.bin.expand(slug);
+                compile(&src, &bin)?;
+                Ok((name, url, *matching, testcases, bin))
             },
         )
         .collect::<anyhow::Result<Vec<_>>>()?;
 
-    for (name, url, matching, testsets, binary) in tests {
-        test(&name, &url, matching, &testsets, &binary)?;
+    for (name, url, matching, testcases, bin) in tests {
+        test(&name, &url, matching, &testcases, &bin)?;
+    }
+    Ok(())
+}
+
+fn scrape_sample_cases(config: &Config) -> anyhow::Result<()> {
+    for (slug, example) in &config.examples {
+        let dst_dir = config.testcases.expand(slug);
+        if !(dst_dir.exists() || example.alt_testcases.is_some()) {
+            let samples = get_html(&example.url)?.extract_samples()?;
+            save_testcases(&dst_dir, &samples)?;
+        }
+    }
+    Ok(())
+}
+
+fn get_html(url: &Url) -> anyhow::Result<Html> {
+    static USER_AGENT: &str =
+        "test-with-generated-opts <https://github.com/rust-lang-ja/atcoder-rust-base>";
+
+    info!("GET: {}", url);
+
+    let res = ureq::get(url.as_ref()).set("User-Agent", USER_AGENT).call();
+
+    if let Some(err) = res.synthetic_error() {
+        let mut err = err as &dyn std::error::Error;
+        let mut displays = vec![err.to_string()];
+        while let Some(source) = err.source() {
+            displays.push(source.to_string());
+            err = source;
+        }
+        let mut displays = displays.into_iter().rev();
+        let cause = anyhow!("{}", displays.next().unwrap());
+        return Err(displays.fold(cause, |err, display| err.context(display)));
+    }
+
+    info!("{} {}", res.status(), res.status_text());
+    ensure!(res.status() == 200, "expected 200");
+    let text = res.into_string()?;
+    Ok(Html::parse_document(&text))
+}
+
+trait HtmlExt {
+    fn extract_samples(&self) -> anyhow::Result<Vec<(String, String)>>;
+}
+
+impl HtmlExt for Html {
+    fn extract_samples(&self) -> anyhow::Result<Vec<(String, String)>> {
+        fn extract_samples(
+            this: &Html,
+            selector_for_header: &'static Selector,
+            selector_for_content: &'static Selector,
+            re_input: &'static Regex,
+            re_output: &'static Regex,
+        ) -> Option<Vec<(String, String)>> {
+            macro_rules! static_selector {
+                ($s:expr $(,)?) => {{
+                    static SELECTOR: Lazy<Selector> = Lazy::new(|| Selector::parse($s).unwrap());
+                    &*SELECTOR
+                }};
+            }
+
+            macro_rules! guard {
+                ($p:expr $(,)?) => {
+                    if !$p {
+                        return None;
+                    }
+                };
+            }
+
+            let task_statement = this
+                .select(static_selector!("#task-statement"))
+                .exactly_one()
+                .ok()
+                .or_else(|| {
+                    this.select(static_selector!(
+                        r#"div[id="task-statement"] > div[id="task-statement"]"#,
+                    ))
+                    .exactly_one()
+                    .ok()
+                })?;
+
+            let mut ins = BTreeMap::<usize, _>::new();
+            let mut outs = BTreeMap::<usize, _>::new();
+            let mut next = None;
+            let selector = selector_for_header.or(selector_for_content);
+            for elem_ref in task_statement.select(&selector) {
+                if elem_ref.value().name() == "h3" {
+                    let text = elem_ref.text().join("");
+                    if let Some(caps) = re_input.captures(&text) {
+                        next = Some((true, parse_possibly_zenkaku(&caps[1]).ok()?));
+                    } else if let Some(caps) = re_output.captures(&text) {
+                        next = Some((false, parse_possibly_zenkaku(&caps[1]).ok()?));
+                    }
+                } else if ["pre", "section"].contains(&elem_ref.value().name()) {
+                    if let Some((is_input, n)) = next {
+                        let text = elem_ref.text().join("");
+                        if is_input {
+                            ins.insert(n, text);
+                        } else {
+                            outs.insert(n, text);
+                        }
+                    }
+                    next = None;
+                }
+            }
+
+            let mut samples = ins
+                .into_iter()
+                .flat_map(|(idx, input)| outs.remove(&idx).map(|output| (input, output)))
+                .collect::<Vec<_>>();
+
+            for (input, output) in &mut samples {
+                for s in &mut [input, output] {
+                    if !(s.is_empty() || s.ends_with('\n')) {
+                        s.push('\n');
+                    }
+                    guard!(is_valid_text(s));
+                }
+            }
+
+            (!samples.is_empty()).then_(samples)
+        }
+
+        fn parse_possibly_zenkaku<T: FromStr>(s: &str) -> Result<T, T::Err> {
+            s.parse().or_else(|err| {
+                if s.chars().all(|c| '０' <= c && c <= '９') {
+                    s.chars()
+                        .map(|c| {
+                            char::from((u32::from(c) - u32::from('０') + u32::from('0')) as u8)
+                        })
+                        .collect::<String>()
+                        .parse()
+                } else {
+                    Err(err)
+                }
+            })
+        }
+
+        fn is_valid_text(s: &str) -> bool {
+            s == "\n"
+                || ![' ', '\n'].iter().any(|&c| s.starts_with(c))
+                    && s.chars().all(|c| {
+                        c.is_ascii() && (c.is_ascii_whitespace() == [' ', '\n'].contains(&c))
+                    })
+        }
+
+        trait SelectorExt {
+            fn or(&self, other: &Self) -> Self;
+        }
+
+        impl SelectorExt for Selector {
+            fn or(&self, other: &Self) -> Self {
+                let mut acc = self.clone();
+                acc.selectors.extend(other.selectors.clone());
+                acc
+            }
+        }
+
+        macro_rules! lazy_regex {
+            ($s:expr $(,)?) => {
+                Lazy::new(|| Regex::new($s).unwrap())
+            };
+        }
+
+        macro_rules! lazy_selector {
+            ($s:expr $(,)?) => {
+                Lazy::new(|| Selector::parse($s).unwrap())
+            };
+        }
+
+        static IN_JA: Lazy<Regex> = lazy_regex!(r"\A[\s\n]*入力例\s*(\d{1,2})[.\n]*\z");
+        static OUT_JA: Lazy<Regex> = lazy_regex!(r"\A[\s\n]*出力例\s*(\d{1,2})[.\n]*\z");
+        static IN_EN: Lazy<Regex> = lazy_regex!(r"\ASample Input\s?([0-9]{1,2}).*\z");
+        static OUT_EN: Lazy<Regex> = lazy_regex!(r"\ASample Output\s?([0-9]{1,2}).*\z");
+
+        // Current style (Japanese)
+        static P1_HEAD: Lazy<Selector> =
+            lazy_selector!("span.lang > span.lang-ja > div.part > section > h3");
+        static P1_CONTENT: Lazy<Selector> =
+            lazy_selector!("span.lang > span.lang-ja > div.part > section > pre");
+        // Current style (English)
+        static P2_HEAD: Lazy<Selector> =
+            lazy_selector!("span.lang > span.lang-en > div.part > section > h3");
+        static P2_CONTENT: Lazy<Selector> =
+            lazy_selector!("span.lang>span.lang-en>div.part>section>pre");
+        // ARC019..ARC057 \ {ARC019/C, ARC046/D, ARC050, ARC052/{A, C}, ARC053, ARC055},
+        // ABC007..ABC040 \ {ABC036}, ATC001, ATC002
+        static P3_HEAD: Lazy<Selector> = lazy_selector!("div.part > section > h3");
+        static P3_CONTENT: Lazy<Selector> = lazy_selector!("div.part > section > pre");
+        // ARC002..ARC018, ARC019/C, ABC001..ABC006
+        static P4_HEAD: Lazy<Selector> = lazy_selector!("div.part > h3,pre");
+        static P4_CONTENT: Lazy<Selector> = lazy_selector!("div.part > section > pre");
+        // ARC001, dwacon2018-final/{A, B}
+        static P5_HEAD: Lazy<Selector> = lazy_selector!("h3,pre");
+        static P5_CONTENT: Lazy<Selector> = lazy_selector!("section > pre");
+        // ARC046/D, ARC050, ARC052/{A, C}, ARC053, ARC055, ABC036, ABC041
+        static P6_HEAD: Lazy<Selector> = lazy_selector!("section > h3");
+        static P6_CONTENT: Lazy<Selector> = lazy_selector!("section > pre");
+        // ABC034
+        static P7_HEAD: Lazy<Selector> = lazy_selector!("span.lang > span.lang-ja > section > h3");
+        static P7_CONTENT: Lazy<Selector> =
+            lazy_selector!("span.lang > span.lang-ja > section > pre");
+        // practice contest (Japanese)
+        static P8_HEAD: Lazy<Selector> = lazy_selector!("span.lang > span.lang-ja > div.part > h3");
+        static P8_CONTENT: Lazy<Selector> =
+            lazy_selector!("span.lang > span.lang-ja > div.part > section > pre");
+
+        extract_samples(self, &P1_HEAD, &P1_CONTENT, &IN_JA, &OUT_JA)
+            .or_else(|| extract_samples(self, &P2_HEAD, &P2_CONTENT, &IN_EN, &OUT_EN))
+            .or_else(|| extract_samples(self, &P3_HEAD, &P3_CONTENT, &IN_JA, &OUT_JA))
+            .or_else(|| extract_samples(self, &P4_HEAD, &P4_CONTENT, &IN_JA, &OUT_JA))
+            .or_else(|| extract_samples(self, &P5_HEAD, &P5_CONTENT, &IN_JA, &OUT_JA))
+            .or_else(|| extract_samples(self, &P6_HEAD, &P6_CONTENT, &IN_JA, &OUT_JA))
+            .or_else(|| extract_samples(self, &P7_HEAD, &P7_CONTENT, &IN_JA, &OUT_JA))
+            .or_else(|| extract_samples(self, &P8_HEAD, &P8_CONTENT, &IN_JA, &OUT_JA))
+            .ok_or_else(|| anyhow!("Failed to scrape"))
+    }
+}
+
+fn save_testcases(dir: &Path, cases: &[(String, String)]) -> anyhow::Result<()> {
+    let contents = cases
+        .iter()
+        .enumerate()
+        .flat_map(|(idx, (input, output))| {
+            let file_name = format!("{}.txt", idx + 1);
+            let input = (dir.join("in").join(&file_name), input);
+            let output = (dir.join("out").join(file_name), output);
+            vec![input, output]
+        })
+        .collect::<BTreeMap<_, _>>();
+
+    for (path, contents) in contents {
+        let parent = path.parent().expect("should not be root or empty");
+        if !parent.exists() {
+            create_dir_all(parent)?;
+        }
+        write(&path, contents)?;
+        info!("Wrote {}", path.display());
     }
     Ok(())
 }
 
-fn compile(src: &Path, tempdir: &Path, dir_name: &str) -> anyhow::Result<PathBuf> {
+fn load_testcases(dir: &Path) -> anyhow::Result<BTreeMap<OsString, (String, String)>> {
+    let find_files = |dir_file_name: &str| -> _ {
+        let dir = dir.join(dir_file_name);
+        (|| -> _ {
+            fs::read_dir(&dir)?
+                .flat_map(|entry| {
+                    entry
+                        .map(|entry| {
+                            let path = entry.path();
+                            (path.extension() == Some("txt".as_ref())).then_with_(|| {
+                                (path.file_stem().unwrap_or_default().to_owned(), path)
+                            })
+                        })
+                        .transpose()
+                })
+                .collect::<io::Result<BTreeMap<_, _>>>()
+        })()
+        .with_context(|| format!("Failed to read {}", dir.display()))
+    };
+
+    let (ins, mut outs) = (find_files("in")?, find_files("out")?);
+    ins.into_iter()
+        .flat_map(|(stem, input)| outs.remove(&stem).map(|output| (stem, input, output)))
+        .map(|(stem, input, output)| {
+            let (input, output) = (read_to_string(input)?, read_to_string(output)?);
+            Ok((stem, (input, output)))
+        })
+        .collect()
+}
+
+fn compile(src: &Path, bin: &Path) -> anyhow::Result<()> {
     fn run_command<S1: AsRef<OsStr>, S2: AsRef<OsStr>, I: IntoIterator<Item = S2>>(
         program: S1,
         args: I,
@@ -116,6 +397,19 @@ fn compile(src: &Path, tempdir: &Path, dir_name: &str) -> anyhow::Result<PathBuf
         Ok(stdout)
     }
 
+    if let (Ok(src_metadata), Ok(bin_metadata)) = (src.metadata(), bin.metadata()) {
+        if src_metadata.modified()? < bin_metadata.modified()? {
+            info!("{} is up to date.", bin.display());
+            return Ok(());
+        }
+    }
+
+    if let Some(parent) = bin.parent() {
+        if !parent.exists() {
+            create_dir_all(parent)?;
+        }
+    }
+
     let generated_opts = {
         let program = which::which("rustc-dep-option-generator")?;
         let stdout = run_command(&program, &["--format", "json"])?;
@@ -123,10 +417,6 @@ fn compile(src: &Path, tempdir: &Path, dir_name: &str) -> anyhow::Result<PathBuf
             .with_context(|| format!("{}: invalid output", program.to_string_lossy()))?
     };
 
-    let out = tempdir
-        .join(dir_name)
-        .with_extension(if cfg!(windows) { "exe" } else { "" });
-
     let program = env::var_os("RUSTC")
         .map(Ok)
         .unwrap_or_else(|| which::which("rustc").map(Into::into))?;
@@ -138,7 +428,7 @@ fn compile(src: &Path, tempdir: &Path, dir_name: &str) -> anyhow::Result<PathBuf
             OsString::from("-C"),
             OsString::from("opt-level=3"),
             OsString::from("-o"),
-            OsString::from(&out),
+            OsString::from(bin),
         ];
         for opt in generated_opts {
             args.push(opt.into());
@@ -146,59 +436,21 @@ fn compile(src: &Path, tempdir: &Path, dir_name: &str) -> anyhow::Result<PathBuf
         args.push(src.to_owned().into());
         args
     };
-
-    run_command(program, args)?;
-    Ok(out)
+    run_command(program, args).map(drop)
 }
 
 fn test(
     task_name: &str,
-    url: &str,
+    url: &Url,
     matching: Matching,
-    testsets: &Path,
+    testcases: &BTreeMap<OsString, (String, String)>,
     binary: &Path,
 ) -> anyhow::Result<()> {
-    let testsets = {
-        let find_files = |dir_file_name: &str| -> _ {
-            let dir = testsets.join(dir_file_name);
-            fs::read_dir(&dir)
-                .and_then(|read_dir| {
-                    read_dir
-                        .map(|entry| {
-                            let path = entry?.path();
-                            let name = path
-                                .file_stem()
-                                .unwrap_or_default()
-                                .to_string_lossy()
-                                .into_owned();
-                            Ok((name, path))
-                        })
-                        .collect::<io::Result<HashMap<_, _>>>()
-                })
-                .with_context(|| format!("Failed to read {}", dir.display()))
-        };
-
-        let (ins, outs) = (find_files("in")?, find_files("out")?);
-
-        ins.into_iter()
-            .flat_map(|(stem, path_in)| {
-                outs.get(&stem)
-                    .map(|path_out| (stem, (path_in, path_out.clone())))
-            })
-            .collect::<BTreeMap<_, _>>()
-    };
-
     info!("Testing {}", binary.display());
     info!("  Name: {:?}", task_name);
     info!("  URL: {}", url);
 
-    for (test_name, (path_in, path_out)) in testsets {
-        fn read_to_string(path: &Path) -> anyhow::Result<String> {
-            fs::read_to_string(path).with_context(|| format!("Failed to read {}", path.display()))
-        }
-
-        let input = read_to_string(&path_in)?;
-        let expected = read_to_string(&path_out)?;
+    for (case_name, (input, expected)) in testcases {
         let start = Instant::now();
 
         let mut child = Command::new(binary)
@@ -231,7 +483,7 @@ fn test(
         } else {
             "RE"
         };
-        info!("{}: {} in {}ms", test_name, verdict, time);
+        info!("{:?}: {} in {}ms", case_name, verdict, time);
         if verdict != "AC" {
             return Err(anyhow!("Test failed"));
         }
@@ -239,16 +491,133 @@ fn test(
     Ok(())
 }
 
+fn read_to_string(path: impl AsRef<Path>) -> anyhow::Result<String> {
+    let path = path.as_ref();
+    fs::read_to_string(path).with_context(|| format!("Failed to read {}", path.display()))
+}
+
+fn read_toml<P: AsRef<Path>, T: DeserializeOwned>(path: P) -> anyhow::Result<T> {
+    let path = path.as_ref();
+    fs::read_to_string(path)
+        .map_err(anyhow::Error::from)
+        .and_then(|s| toml::from_str(&s).map_err(Into::into))
+        .with_context(|| format!("Failed to read {}", path.display()))
+}
+
+fn write(path: impl AsRef<Path>, contents: impl AsRef<str>) -> anyhow::Result<()> {
+    let (path, contents) = (path.as_ref(), contents.as_ref());
+    fs::write(path, contents).with_context(|| format!("Failed to write {}", path.display()))
+}
+
+fn create_dir_all(path: impl AsRef<Path>) -> anyhow::Result<()> {
+    let path = path.as_ref();
+    fs::create_dir_all(path).with_context(|| format!("Failed to create {}", path.display()))
+}
+
+trait BoolExt {
+    /// <https://github.com/rust-lang/rust/issues/64260>
+    fn then_<T>(self, t: T) -> Option<T>;
+
+    /// <https://github.com/rust-lang/rust/issues/64260>
+    fn then_with_<T, F>(self, f: F) -> Option<T>
+    where
+        F: FnOnce() -> T;
+}
+
+impl BoolExt for bool {
+    fn then_<T>(self, t: T) -> Option<T> {
+        if self {
+            Some(t)
+        } else {
+            None
+        }
+    }
+
+    fn then_with_<T, F>(self, f: F) -> Option<T>
+    where
+        F: FnOnce() -> T,
+    {
+        if self {
+            Some(f())
+        } else {
+            None
+        }
+    }
+}
+
 #[derive(Debug, Deserialize)]
 struct Config {
+    bin: PathTemplate,
+    testcases: PathTemplate,
     examples: IndexMap<String, Example>,
 }
 
+#[derive(Debug)]
+struct PathTemplate(Vec<PathTemplateToken>);
+
+impl PathTemplate {
+    fn expand(&self, slug: &str) -> PathBuf {
+        self.0
+            .iter()
+            .map(|token| match token {
+                PathTemplateToken::Brace => slug,
+                PathTemplateToken::Plain(plain) => plain,
+            })
+            .join("")
+            .into()
+    }
+}
+
+impl<'de> Deserialize<'de> for PathTemplate {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        use nom::branch::alt;
+        use nom::bytes::complete::take_while1;
+        use nom::character::complete::{char, space0};
+        use nom::multi::many0;
+        use nom::IResult;
+
+        fn tokens(input: &str) -> IResult<&str, Vec<PathTemplateToken>> {
+            many0(alt((brace, plain)))(input)
+        }
+
+        fn brace(input: &str) -> IResult<&str, PathTemplateToken> {
+            let (input, _) = char('{')(input)?;
+            let (input, _) = space0(input)?;
+            let (input, _) = char('}')(input)?;
+            Ok((input, PathTemplateToken::Brace))
+        }
+
+        fn plain(input: &str) -> IResult<&str, PathTemplateToken> {
+            let (input, plain) = take_while1(|c| !['{', '}'].contains(&c))(input)?;
+            Ok((input, PathTemplateToken::Plain(plain.to_owned())))
+        }
+
+        let input = String::deserialize(deserializer)?;
+        let (_, tokens) = tokens(&input).map_err(|err| match err {
+            nom::Err::Incomplete(_) => unreachable!(),
+            nom::Err::Error((s, k)) | nom::Err::Failure((s, k)) => serde::de::Error::custom(
+                format!("{:?} at {}: {:?}", input, input.len() - s.len(), k),
+            ),
+        })?;
+        Ok(Self(tokens))
+    }
+}
+
+#[derive(Debug)]
+enum PathTemplateToken {
+    Brace,
+    Plain(String),
+}
+
 #[derive(Debug, Deserialize)]
 struct Example {
     name: String,
-    url: String,
+    url: Url,
     matching: Matching,
+    alt_testcases: Option<Vec<AltTestCase>>,
 }
 
 #[derive(Debug, Clone, Copy, Deserialize)]
@@ -292,3 +661,9 @@ impl Matching {
         }
     }
 }
+
+#[derive(Debug, Deserialize)]
+struct AltTestCase {
+    r#in: String,
+    out: String,
+}

From ad381fde44837210659c8b686a80340e3e0284db Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sun, 22 Dec 2019 13:07:28 +0900
Subject: [PATCH 12/39] Add an example for sumitrust2019-C

---
 examples/sumitrust2019-c.rs   | 25 +++++++++++++++++++++++++
 test-with-generated-opts.toml |  5 +++++
 2 files changed, 30 insertions(+)
 create mode 100644 examples/sumitrust2019-c.rs

diff --git a/examples/sumitrust2019-c.rs b/examples/sumitrust2019-c.rs
new file mode 100644
index 0000000..cd9d5fd
--- /dev/null
+++ b/examples/sumitrust2019-c.rs
@@ -0,0 +1,25 @@
+// https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c
+
+use defmac::defmac;
+use fixedbitset::FixedBitSet;
+
+use std::io::{self, Read as _};
+
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    defmac!(read => input.next().unwrap().parse().unwrap());
+
+    let x: usize = read!();
+
+    let mut dp = FixedBitSet::with_capacity(x + 105);
+    dp.insert(0);
+    for i in 0..=x.saturating_sub(100) {
+        if dp[i] {
+            // `insert_range` does not accept `RangeInclusive<usize>`.
+            dp.insert_range(i + 100..i + 106);
+        }
+    }
+    println!("{}", u32::from(dp[x]));
+}
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index a0f2832..8c74bc2 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -83,3 +83,8 @@ matching = "Words"
 name = "ATC002: B - n^p mod m"
 url = "https://atcoder.jp/contests/atc002/tasks/atc002_b"
 matching = "Words"
+
+[examples.sumitrust2019-c]
+name = "Sumitomo Mitsui Trust Bank Programming Contest 2019: C - 100 to 105"
+url = "https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c"
+matching = "Words"

From 80ac51cfe7a523e24aea648ef4985b514cc02e8a Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 10 Jan 2020 18:34:06 +0900
Subject: [PATCH 13/39] Modify an example

---
 examples/abc129-f.rs | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/examples/abc129-f.rs b/examples/abc129-f.rs
index 0fbd84c..ad0244f 100644
--- a/examples/abc129-f.rs
+++ b/examples/abc129-f.rs
@@ -22,7 +22,8 @@ fn main() {
     MOD.with(|cell| cell.set(m));
 
     let count = |d| -> _ {
-        let count = |sup: u64| cmp::min(sup.saturating_sub(a + 1) / b + u64::from(b < sup), l);
+        let count =
+            |above: u64| cmp::min(above.saturating_sub(a + 1) / b + u64::from(b < above), l);
         count(10u64.pow(d)) - count(10u64.pow(d - 1))
     };
 
@@ -65,12 +66,8 @@ thread_local! {
 struct Z(u64);
 
 impl Z {
-    fn checked(mut val: u64) -> Self {
-        let modulus = MOD.with(Cell::get);
-        if val >= modulus {
-            val %= modulus;
-        }
-        Self(val)
+    fn checked(val: u64) -> Self {
+        Self(val % MOD.with(Cell::get))
     }
 }
 

From 0ff2ac1dbec1b7fb572c8454d8ab5b8715115965 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 10 Jan 2020 20:08:06 +0900
Subject: [PATCH 14/39] Remove comments

---
 examples/abc084-d.rs | 2 --
 examples/abc142-d.rs | 2 --
 2 files changed, 4 deletions(-)

diff --git a/examples/abc084-d.rs b/examples/abc084-d.rs
index 3747c2b..be215e6 100644
--- a/examples/abc084-d.rs
+++ b/examples/abc084-d.rs
@@ -40,8 +40,6 @@ fn main() {
     let q = read!(usize);
     let lrs = read!([(usize, usize); q]);
 
-    // サンプルケースでしか試してないので嘘かもしれない。
-
     let hi = lrs.iter().map(|&(_, r)| r).max().unwrap();
     let sieve = Sieve::new(hi);
     let nums = (0..=hi)
diff --git a/examples/abc142-d.rs b/examples/abc142-d.rs
index fa4d093..feb0953 100644
--- a/examples/abc142-d.rs
+++ b/examples/abc142-d.rs
@@ -15,8 +15,6 @@ fn main() {
 
     let (a, b): (usize, usize) = (read!(), read!());
 
-    // サンプルケースでしか試してないので嘘かもしれない。
-
     let sieve = Sieve::new(num_integer::sqrt(max(a, b)));
     let bases = |k| -> HashSet<_> {
         sieve

From a823fa69acdd71a16a8874d8ad62494be7e1d782 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sat, 11 Jan 2020 00:55:02 +0900
Subject: [PATCH 15/39] Add an example for ABC150-D

---
 examples/abc150-d.rs          | 34 ++++++++++++++++++++++++++++++++++
 test-with-generated-opts.toml |  5 +++++
 2 files changed, 39 insertions(+)
 create mode 100644 examples/abc150-d.rs

diff --git a/examples/abc150-d.rs b/examples/abc150-d.rs
new file mode 100644
index 0000000..bcc7f71
--- /dev/null
+++ b/examples/abc150-d.rs
@@ -0,0 +1,34 @@
+// https://atcoder.jp/contests/abc150/tasks/abc150_d
+
+use itertools::Itertools as _;
+
+use std::io::{self, Read as _};
+
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules! read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
+    }
+
+    let (n, m) = read!((usize, usize));
+    let a = read!([usize; n]);
+
+    if !a.iter().copied().map(usize::trailing_zeros).all_equal() {
+        println!("0");
+        return;
+    }
+
+    let x0 = a.into_iter().fold(1, num::integer::lcm) / 2;
+    let ans = (m + x0) / (2 * x0);
+    println!("{}", ans);
+}
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 8c74bc2..bb9ce14 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -48,6 +48,11 @@ name = "ABC144: D - Water Bottle"
 url = "https://atcoder.jp/contests/abc144/tasks/abc144_d"
 matching = { FloatOr = { abs = 1e-6, rel = 1e-6 } }
 
+[examples.abc150-d]
+name = "ABC150: D - Semi Common Multiple"
+url = "https://atcoder.jp/contests/abc150/tasks/abc150_d"
+matching = "Words"
+
 [examples.apg4b-a]
 name = "APG4b: A - 1.00.はじめに"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_a"

From 68c8e1115adf78b05e4cfdab70ab6b5bfba32a48 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sat, 11 Jan 2020 23:04:33 +0900
Subject: [PATCH 16/39] Add an example for ABC141-C

---
 examples/abc141-c.rs          | 22 ++++++++++++++++++++++
 test-with-generated-opts.toml |  5 +++++
 2 files changed, 27 insertions(+)
 create mode 100644 examples/abc141-c.rs

diff --git a/examples/abc141-c.rs b/examples/abc141-c.rs
new file mode 100644
index 0000000..5cc7bc8
--- /dev/null
+++ b/examples/abc141-c.rs
@@ -0,0 +1,22 @@
+// https://atcoder.jp/contests/abc141/tasks/abc141_c
+
+use proconio::marker::Usize1;
+use proconio::{fastout, input};
+
+#[fastout]
+fn main() {
+    input! {
+        n: usize,
+        k: usize,
+        q: usize,
+        a: [Usize1; q],
+    }
+
+    let mut correct = vec![0; n];
+    a.into_iter().for_each(|a| correct[a] += 1);
+
+    for correct in correct {
+        let p = k + correct > q;
+        println!("{}", if p { "Yes" } else { "No" });
+    }
+}
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index bb9ce14..576e024 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -38,6 +38,11 @@ name = "ABC129: F - Takahashi's Basics in Education and Learning"
 url = "https://atcoder.jp/contests/abc129/tasks/abc129_f"
 matching = "Words"
 
+[examples.abc141-c]
+name = "ABC141: C - Attack Survival"
+url = "https://atcoder.jp/contests/abc141/tasks/abc141_c"
+matching = "Words"
+
 [examples.abc142-d]
 name = "ABC142: D - Disjoint Set of Common Divisors"
 url = "https://atcoder.jp/contests/abc142/tasks/abc142_d"

From bd0b0db431f8787d106332cd032b64d91e70999a Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sat, 11 Jan 2020 23:27:15 +0900
Subject: [PATCH 17/39] Note which example uses which crates

---
 test-with-generated-opts.toml | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 576e024..71d63d8 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -7,94 +7,113 @@ testcases = "./target/test-with-generated-opts/testcases/{}"
 name = "ABC054: C - One-stroke Path"
 url = "https://atcoder.jp/contests/abc054/tasks/abc054_c"
 matching = "Words"
+meta = { using = ["permutohedron", "petgraph"] }
 
 [examples.abc057-b]
 name = "ABC057: B - Checkpoints"
 url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
 matching = "Words"
+meta = { using = ["text_io"] }
 
 [examples.abc084-d]
 name = "ABC084: D - 2017-like Number"
 url = "https://atcoder.jp/contests/abc084/tasks/abc084_d"
 matching = "Words"
+meta = { using = ["itertools-num", "primal", "proconio"] }
 
 [examples.abc118-b]
 name = "ABC118: B - Foods Loved by Everyone"
 url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
 matching = "Words"
+meta = { using = ["whiteread"] }
 
 [examples.abc120-d]
 name = "ABC120: D - Decayed Bridges"
 url = "https://atcoder.jp/contests/abc120/tasks/abc120_d"
 matching = "Words"
+meta = { using = ["proconio", "union-find"] }
 
 [examples.abc121-b]
 name = "ABC121: B - Can you solve this?"
 url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
 matching = "Words"
+meta = { using = ["proconio"] }
 
 [examples.abc129-f]
 name = "ABC129: F - Takahashi's Basics in Education and Learning"
 url = "https://atcoder.jp/contests/abc129/tasks/abc129_f"
 matching = "Words"
+meta = { using = ["defmac", "derive_more", "ndarray", "num", "num-derive"] }
 
 [examples.abc141-c]
 name = "ABC141: C - Attack Survival"
 url = "https://atcoder.jp/contests/abc141/tasks/abc141_c"
 matching = "Words"
+meta = { using = ["proconio"] }
 
 [examples.abc142-d]
 name = "ABC142: D - Disjoint Set of Common Divisors"
 url = "https://atcoder.jp/contests/abc142/tasks/abc142_d"
 matching = "Words"
+meta = { using = ["defmac", "num-integer", "primal"] }
 
 [examples.abc144-d]
 name = "ABC144: D - Water Bottle"
 url = "https://atcoder.jp/contests/abc144/tasks/abc144_d"
 matching = { FloatOr = { abs = 1e-6, rel = 1e-6 } }
+meta = { using = ["defmac", "libm"] }
 
 [examples.abc150-d]
 name = "ABC150: D - Semi Common Multiple"
 url = "https://atcoder.jp/contests/abc150/tasks/abc150_d"
 matching = "Words"
+meta = { using = ["itertools", "num"] }
 
 [examples.apg4b-a]
 name = "APG4b: A - 1.00.はじめに"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_a"
 matching = "Exact"
 alt_testcases = [{ in = "", out = "Hello, world!\n" }]
+meta = { using = ["aho-corasick", "alga", "approx", "ascii", "bitset-fixed", "defmac", "derive_more", "derive-new", "either", "euclid", "fixedbitset", "getrandom", "jemallocator", "jemalloc-ctl", "if_chain", "im-rc", "indexmap", "itertools", "itertools-num", "lazy_static", "libm", "maplit", "matches", "modtype", "nalgebra", "ndarray", "nom", "num", "num-bigint", "num-complex", "num-derive", "num-integer", "num-iter", "num-rational", "num-traits", "ordered-float", "permutohedron", "petgraph", "primal", "primal-check", "primal-estimate", "primal-sieve", "proconio", "rand", "rand_chacha", "rand_core", "rand_distr", "rand_hc", "rand_pcg", "regex", "rustc-hash", "smallvec", "strsim", "superslice", "take_mut", "text_io", "union-find", "whiteread"] }
 
 [examples.apg4b-ex25]
 name = "APG4b: EX25 - 集合の操作 / 3.05"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_bx"
 matching = "Words"
+meta = { using = ["fixedbitset", "itertools"] }
 
 [examples.apg4b-ex26]
 name = "APG4b: EX26 - 電卓を作ろう3 / 3.06"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_bw"
 matching = "Exact"
+meta = { using = ["itertools", "maplit", "matches", "nom"] }
 
 [examples.arc065-c]
 name = "ABC049 / ARC065: C - 白昼夢 / Daydream"
 url = "https://atcoder.jp/contests/arc065/tasks/arc065_a"
 matching = "Words"
+meta = { using = ["lazy_static", "regex"] }
 
 [examples.arc084-c]
 name = "ABC077 / ARC084: C - Snuke Festival"
 url = "https://atcoder.jp/contests/arc084/tasks/arc084_a"
 matching = "Words"
+meta = { using = ["superslice"] }
 
 [examples.atc001-b]
 name = "ATC001: B - Union Find"
 url = "https://atcoder.jp/contests/atc001/tasks/unionfind_a"
 matching = "Words"
+meta = { using = ["petgraph", "proconio"] }
 
 [examples.atc002-b]
 name = "ATC002: B - n^p mod m"
 url = "https://atcoder.jp/contests/atc002/tasks/atc002_b"
 matching = "Words"
+meta = { using = ["defmac", "num"] }
 
 [examples.sumitrust2019-c]
 name = "Sumitomo Mitsui Trust Bank Programming Contest 2019: C - 100 to 105"
 url = "https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c"
 matching = "Words"
+meta = { using = ["defmac", "fixedbitset"] }

From 931fda820ca6549ba16eb3e25f9af253ae7ee75c Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sat, 11 Jan 2020 23:50:05 +0900
Subject: [PATCH 18/39] Remove `fastout`s from some examples

---
 examples/abc084-d.rs          | 46 +++++++++++++++------------------
 examples/abc120-d.rs          | 48 +++++++++++++++++------------------
 examples/atc001-b.rs          | 47 +++++++++++++++-------------------
 test-with-generated-opts.toml |  6 ++---
 4 files changed, 69 insertions(+), 78 deletions(-)

diff --git a/examples/abc084-d.rs b/examples/abc084-d.rs
index be215e6..9aa11b8 100644
--- a/examples/abc084-d.rs
+++ b/examples/abc084-d.rs
@@ -3,50 +3,46 @@
 use itertools_num::ItertoolsNum as _;
 use primal::Sieve;
 
-use std::io::{self, Read as _};
+use std::io::{self, BufWriter, Read as _, StdoutLock, Write as _};
 
-// `proconio::fastout` does not accept `macro_rules!` until Rust 1.40.
-macro_rules! macro_rules_hack {
-    ($name:ident { $($tt:tt)* }) => {
-        macro_rules! $name {
-            $($tt)*
-        }
-    };
-}
-
-#[proconio::fastout]
 fn main() {
     let mut input = "".to_owned();
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
-    macro_rules_hack!(read {
+    macro_rules! read {
         ([$tt:tt; $n:expr]) => {
             (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
         };
         (($($tt:tt),+)) => {
             ($(read!($tt)),*)
         };
-        (_1based) => {
-            read!(usize) - 1
-        };
-        (_bytes) => {
-            read!(String).into_bytes()
-        };
         ($ty:ty) => {
             input.next().unwrap().parse::<$ty>().unwrap()
         };
-    });
+    }
 
     let q = read!(usize);
     let lrs = read!([(usize, usize); q]);
 
-    let hi = lrs.iter().map(|&(_, r)| r).max().unwrap();
-    let sieve = Sieve::new(hi);
-    let nums = (0..=hi)
+    let max = lrs.iter().map(|&(_, r)| r).max().unwrap();
+    let sieve = Sieve::new(max);
+    let nums = (0..=max)
         .map(|k| u32::from(sieve.is_prime(k) && sieve.is_prime((k + 1) / 2)))
         .cumsum()
         .collect::<Vec<u32>>();
-    for (l, r) in lrs {
-        println!("{}", nums[r] - nums[l - 1]);
-    }
+
+    buf_print(|stdout| {
+        macro_rules! println { ($($tt:tt)*) => { writeln!(stdout, $($tt)*).unwrap() }; }
+
+        for (l, r) in lrs {
+            println!("{}", nums[r] - nums[l - 1]);
+        }
+    });
+}
+
+fn buf_print(f: impl FnOnce(&mut BufWriter<StdoutLock>)) {
+    let stdout = io::stdout();
+    let mut stdout = BufWriter::new(stdout.lock());
+    f(&mut stdout);
+    stdout.flush().unwrap();
 }
diff --git a/examples/abc120-d.rs b/examples/abc120-d.rs
index f79079b..8425a07 100644
--- a/examples/abc120-d.rs
+++ b/examples/abc120-d.rs
@@ -2,23 +2,13 @@
 
 use union_find::{QuickFindUf, UnionBySize, UnionFind as _};
 
-use std::io::{self, Read as _};
+use std::io::{self, BufWriter, Read as _, StdoutLock, Write as _};
 
-// `proconio::fastout` does not accept `macro_rules!` until Rust 1.40.
-macro_rules! macro_rules_hack {
-    ($name:ident { $($tt:tt)* }) => {
-        macro_rules! $name {
-            $($tt)*
-        }
-    };
-}
-
-#[proconio::fastout]
 fn main() {
     let mut input = "".to_owned();
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
-    macro_rules_hack!(read {
+    macro_rules! read {
         ([$tt:tt; $n:expr]) => {
             (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
         };
@@ -28,29 +18,39 @@ fn main() {
         (_1based) => {
             read!(usize) - 1
         };
-        (_bytes) => {
-            read!(String).into_bytes()
-        };
         ($ty:ty) => {
             input.next().unwrap().parse::<$ty>().unwrap()
         };
-    });
+    }
 
     let (n, m) = read!((usize, usize));
     let abs = read!([(_1based, _1based); m]);
 
+    let max = n * (n - 1) / 2;
     let mut uf = QuickFindUf::<UnionBySize>::new(n);
-    let mut k = n * (n - 1) / 2;
-    let mut ans_rev = vec![k];
-    ans_rev.extend(abs.into_iter().rev().map(|(a, b)| {
+    let mut ans_rev = vec![max];
+
+    ans_rev.extend(abs.into_iter().rev().scan(max, |cur, (a, b)| {
         let p = uf.get(a).size() * uf.get(b).size();
         if uf.union(a, b) {
-            k -= p;
+            *cur -= p;
         }
-        k
+        Some(*cur)
     }));
     assert_eq!(ans_rev.pop(), Some(0));
-    for x in ans_rev.into_iter().rev() {
-        println!("{}", x);
-    }
+
+    buf_print(|stdout| {
+        macro_rules! println { ($($tt:tt)*) => { writeln!(stdout, $($tt)*).unwrap() }; }
+
+        for x in ans_rev.into_iter().rev() {
+            println!("{}", x);
+        }
+    });
+}
+
+fn buf_print(f: impl FnOnce(&mut BufWriter<StdoutLock>)) {
+    let stdout = io::stdout();
+    let mut stdout = BufWriter::new(stdout.lock());
+    f(&mut stdout);
+    stdout.flush().unwrap();
 }
diff --git a/examples/atc001-b.rs b/examples/atc001-b.rs
index 9d16d6a..ff4ccf2 100644
--- a/examples/atc001-b.rs
+++ b/examples/atc001-b.rs
@@ -2,50 +2,45 @@
 
 use petgraph::unionfind::UnionFind;
 
-use std::io::{self, Read as _};
+use std::io::{self, BufWriter, Read as _, StdoutLock, Write as _};
 
-// `proconio::fastout` does not accept `macro_rules!` until Rust 1.40.
-macro_rules! macro_rules_hack {
-    ($name:ident { $($tt:tt)* }) => {
-        macro_rules! $name {
-            $($tt)*
-        }
-    };
-}
-
-#[proconio::fastout]
 fn main() {
     let mut input = "".to_owned();
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
-    macro_rules_hack!(read {
+    macro_rules! read {
         ([$tt:tt; $n:expr]) => {
             (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
         };
         (($($tt:tt),+)) => {
             ($(read!($tt)),*)
         };
-        (_1based) => {
-            read!(usize) - 1
-        };
-        (_bytes) => {
-            read!(String).into_bytes()
-        };
         ($ty:ty) => {
             input.next().unwrap().parse::<$ty>().unwrap()
         };
-    });
+    }
 
     let (n, q) = read!((usize, usize));
     let pabs = read!([(u8, usize, usize); q]);
 
     let mut uf = UnionFind::new(n);
-    for (p, a, b) in pabs {
-        if p == 1 {
-            let same = uf.find(a) == uf.find(b);
-            println!("{}", if same { "Yes" } else { "No" });
-        } else {
-            uf.union(a, b);
+    buf_print(|stdout| {
+        macro_rules! println { ($($tt:tt)*) => { writeln!(stdout, $($tt)*).unwrap() }; }
+
+        for (p, a, b) in pabs {
+            if p == 1 {
+                let same = uf.find(a) == uf.find(b);
+                println!("{}", if same { "Yes" } else { "No" });
+            } else {
+                uf.union(a, b);
+            }
         }
-    }
+    });
+}
+
+fn buf_print(f: impl FnOnce(&mut BufWriter<StdoutLock>)) {
+    let stdout = io::stdout();
+    let mut stdout = BufWriter::new(stdout.lock());
+    f(&mut stdout);
+    stdout.flush().unwrap();
 }
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 71d63d8..34ea2f3 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -19,7 +19,7 @@ meta = { using = ["text_io"] }
 name = "ABC084: D - 2017-like Number"
 url = "https://atcoder.jp/contests/abc084/tasks/abc084_d"
 matching = "Words"
-meta = { using = ["itertools-num", "primal", "proconio"] }
+meta = { using = ["itertools-num", "primal"] }
 
 [examples.abc118-b]
 name = "ABC118: B - Foods Loved by Everyone"
@@ -31,7 +31,7 @@ meta = { using = ["whiteread"] }
 name = "ABC120: D - Decayed Bridges"
 url = "https://atcoder.jp/contests/abc120/tasks/abc120_d"
 matching = "Words"
-meta = { using = ["proconio", "union-find"] }
+meta = { using = ["union-find"] }
 
 [examples.abc121-b]
 name = "ABC121: B - Can you solve this?"
@@ -104,7 +104,7 @@ meta = { using = ["superslice"] }
 name = "ATC001: B - Union Find"
 url = "https://atcoder.jp/contests/atc001/tasks/unionfind_a"
 matching = "Words"
-meta = { using = ["petgraph", "proconio"] }
+meta = { using = ["petgraph"] }
 
 [examples.atc002-b]
 name = "ATC002: B - n^p mod m"

From 3d74af8ad5e78d6daafcf8d64f11407f276cf0fe Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sun, 12 Jan 2020 03:48:09 +0900
Subject: [PATCH 19/39] More input examples

---
 examples/abc057-b-naive.rs                    | 33 ++++++++++
 examples/abc057-b-proconio.rs                 | 22 +++++++
 examples/{abc057-b.rs => abc057-b-text-io.rs} |  0
 examples/abc057-b-whiteread.rs                | 21 +++++++
 examples/abc118-b-naive.rs                    | 36 +++++++++++
 examples/abc118-b-proconio.rs                 | 21 +++++++
 examples/abc118-b-text-io.rs                  | 27 +++++++++
 .../{abc118-b.rs => abc118-b-whiteread.rs}    |  0
 examples/abc121-b-naive.rs                    | 30 ++++++++++
 .../{abc121-b.rs => abc121-b-proconio.rs}     |  0
 examples/abc121-b-text-io.rs                  | 18 ++++++
 examples/abc121-b-whiteread.rs                | 19 ++++++
 test-with-generated-opts.toml                 | 60 ++++++++++++++++++-
 13 files changed, 284 insertions(+), 3 deletions(-)
 create mode 100644 examples/abc057-b-naive.rs
 create mode 100644 examples/abc057-b-proconio.rs
 rename examples/{abc057-b.rs => abc057-b-text-io.rs} (100%)
 create mode 100644 examples/abc057-b-whiteread.rs
 create mode 100644 examples/abc118-b-naive.rs
 create mode 100644 examples/abc118-b-proconio.rs
 create mode 100644 examples/abc118-b-text-io.rs
 rename examples/{abc118-b.rs => abc118-b-whiteread.rs} (100%)
 create mode 100644 examples/abc121-b-naive.rs
 rename examples/{abc121-b.rs => abc121-b-proconio.rs} (100%)
 create mode 100644 examples/abc121-b-text-io.rs
 create mode 100644 examples/abc121-b-whiteread.rs

diff --git a/examples/abc057-b-naive.rs b/examples/abc057-b-naive.rs
new file mode 100644
index 0000000..6ff92c8
--- /dev/null
+++ b/examples/abc057-b-naive.rs
@@ -0,0 +1,33 @@
+// https://atcoder.jp/contests/abc057/tasks/abc057_b
+
+use std::io::{self, Read as _};
+
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules! read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
+    }
+
+    let (n, m) = read!((usize, usize));
+    let (abs, cds) = read!(([(i64, i64); n], [(i64, i64); m]));
+
+    for (a, b) in abs {
+        let j = (0..m)
+            .min_by_key(|&j| {
+                let (c, d) = cds[j];
+                (a - c).abs() + (b - d).abs()
+            })
+            .unwrap();
+        println!("{}", j + 1);
+    }
+}
diff --git a/examples/abc057-b-proconio.rs b/examples/abc057-b-proconio.rs
new file mode 100644
index 0000000..7f652e8
--- /dev/null
+++ b/examples/abc057-b-proconio.rs
@@ -0,0 +1,22 @@
+// https://atcoder.jp/contests/abc057/tasks/abc057_b
+
+use proconio::input;
+
+fn main() {
+    input! {
+        n: usize,
+        m: usize,
+        abs: [(i64, i64); n],
+        cds: [(i64, i64); m],
+    }
+
+    for (a, b) in abs {
+        let j = (0..m)
+            .min_by_key(|&j| {
+                let (c, d) = cds[j];
+                (a - c).abs() + (b - d).abs()
+            })
+            .unwrap();
+        println!("{}", j + 1);
+    }
+}
diff --git a/examples/abc057-b.rs b/examples/abc057-b-text-io.rs
similarity index 100%
rename from examples/abc057-b.rs
rename to examples/abc057-b-text-io.rs
diff --git a/examples/abc057-b-whiteread.rs b/examples/abc057-b-whiteread.rs
new file mode 100644
index 0000000..4f7b8c8
--- /dev/null
+++ b/examples/abc057-b-whiteread.rs
@@ -0,0 +1,21 @@
+// https://atcoder.jp/contests/abc057/tasks/abc057_b
+
+use whiteread::Reader;
+
+fn main() {
+    let mut rdr = Reader::from_stdin_naive();
+
+    let (n, m) = rdr.p::<(usize, usize)>();
+    let abs = (0..n).map(|_| rdr.p()).collect::<Vec<(i64, i64)>>();
+    let cds = (0..m).map(|_| rdr.p()).collect::<Vec<(i64, i64)>>();
+
+    for (a, b) in abs {
+        let j = (0..m)
+            .min_by_key(|&j| {
+                let (c, d) = cds[j];
+                (a - c).abs() + (b - d).abs()
+            })
+            .unwrap();
+        println!("{}", j + 1);
+    }
+}
diff --git a/examples/abc118-b-naive.rs b/examples/abc118-b-naive.rs
new file mode 100644
index 0000000..1cd1e39
--- /dev/null
+++ b/examples/abc118-b-naive.rs
@@ -0,0 +1,36 @@
+// https://atcoder.jp/contests/abc118/tasks/abc118_b
+
+use std::io::{self, Read as _};
+use std::ops::{BitAnd, BitOr};
+
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules! read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
+    }
+
+    let (n, _) = read!((usize, usize));
+    let a = (0..n)
+        .map(|_| read!([_1based; read!(usize)]))
+        .collect::<Vec<_>>();
+
+    let ans = a
+        .into_iter()
+        .map(|row| row.into_iter().map(|k| 1 << k).fold(0, BitOr::bitor))
+        .fold(usize::max_value(), BitAnd::bitand)
+        .count_ones();
+    println!("{}", ans);
+}
diff --git a/examples/abc118-b-proconio.rs b/examples/abc118-b-proconio.rs
new file mode 100644
index 0000000..722a1e4
--- /dev/null
+++ b/examples/abc118-b-proconio.rs
@@ -0,0 +1,21 @@
+// https://atcoder.jp/contests/abc118/tasks/abc118_b
+
+use proconio::input;
+use proconio::marker::Usize1;
+
+use std::ops::{BitAnd, BitOr};
+
+fn main() {
+    input! {
+        n: usize,
+        _m: usize,
+        a: [[Usize1]; n],
+    }
+
+    let ans = a
+        .into_iter()
+        .map(|row| row.into_iter().map(|k| 1 << k).fold(0, BitOr::bitor))
+        .fold(usize::max_value(), BitAnd::bitand)
+        .count_ones();
+    println!("{}", ans);
+}
diff --git a/examples/abc118-b-text-io.rs b/examples/abc118-b-text-io.rs
new file mode 100644
index 0000000..2cef31d
--- /dev/null
+++ b/examples/abc118-b-text-io.rs
@@ -0,0 +1,27 @@
+// https://atcoder.jp/contests/abc118/tasks/abc118_b
+
+use text_io::{read, try_read, try_scan};
+
+use std::ops::{BitAnd, BitOr};
+
+#[allow(clippy::try_err)]
+fn main() {
+    let (n, _): (usize, usize) = (read!(), read!());
+    let a = (0..n)
+        .map(|_| {
+            (0..read!())
+                .map(|_| {
+                    let a: usize = read!();
+                    a - 1
+                })
+                .collect()
+        })
+        .collect::<Vec<Vec<usize>>>();
+
+    let ans = a
+        .into_iter()
+        .map(|row| row.into_iter().map(|k| 1 << k).fold(0, BitOr::bitor))
+        .fold(usize::max_value(), BitAnd::bitand)
+        .count_ones();
+    println!("{}", ans);
+}
diff --git a/examples/abc118-b.rs b/examples/abc118-b-whiteread.rs
similarity index 100%
rename from examples/abc118-b.rs
rename to examples/abc118-b-whiteread.rs
diff --git a/examples/abc121-b-naive.rs b/examples/abc121-b-naive.rs
new file mode 100644
index 0000000..951e19d
--- /dev/null
+++ b/examples/abc121-b-naive.rs
@@ -0,0 +1,30 @@
+// https://atcoder.jp/contests/abc121/tasks/abc121_b
+
+use std::io::{self, Read as _};
+
+#[allow(clippy::many_single_char_names)]
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules! read {
+        ([$tt:tt; $n:expr]) => {
+            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
+        };
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
+    }
+
+    let (n, m, c) = read!((usize, usize, i32));
+    let (b, a) = read!(([i32; m], [[i32; m]; n]));
+
+    let ans = a
+        .into_iter()
+        .filter(|a| a.iter().zip(&b).map(|(a, b)| a * b).sum::<i32>() + c > 0)
+        .count();
+    println!("{}", ans);
+}
diff --git a/examples/abc121-b.rs b/examples/abc121-b-proconio.rs
similarity index 100%
rename from examples/abc121-b.rs
rename to examples/abc121-b-proconio.rs
diff --git a/examples/abc121-b-text-io.rs b/examples/abc121-b-text-io.rs
new file mode 100644
index 0000000..3c7ab2d
--- /dev/null
+++ b/examples/abc121-b-text-io.rs
@@ -0,0 +1,18 @@
+// https://atcoder.jp/contests/abc121/tasks/abc121_b
+
+use text_io::{read, try_read, try_scan};
+
+#[allow(clippy::many_single_char_names, clippy::try_err)]
+fn main() {
+    let (n, m, c): (usize, usize, i32) = (read!(), read!(), read!());
+    let b = (0..m).map(|_| read!()).collect::<Vec<i32>>();
+    let a = (0..n)
+        .map(|_| (0..m).map(|_| read!()).collect())
+        .collect::<Vec<Vec<i32>>>();
+
+    let ans = a
+        .into_iter()
+        .filter(|a| a.iter().zip(&b).map(|(a, b)| a * b).sum::<i32>() + c > 0)
+        .count();
+    println!("{}", ans);
+}
diff --git a/examples/abc121-b-whiteread.rs b/examples/abc121-b-whiteread.rs
new file mode 100644
index 0000000..7648be9
--- /dev/null
+++ b/examples/abc121-b-whiteread.rs
@@ -0,0 +1,19 @@
+// https://atcoder.jp/contests/abc121/tasks/abc121_b
+
+use whiteread::Reader;
+
+fn main() {
+    let mut rdr = Reader::from_stdin_naive();
+
+    let (n, _, c) = rdr.p::<(usize, usize, i32)>();
+    let b = rdr.line::<Vec<i32>>().unwrap();
+    let a = (0..n)
+        .map(|_| rdr.line().unwrap())
+        .collect::<Vec<Vec<i32>>>();
+
+    let ans = a
+        .into_iter()
+        .filter(|a| a.iter().zip(&b).map(|(a, b)| a * b).sum::<i32>() + c > 0)
+        .count();
+    println!("{}", ans);
+}
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 34ea2f3..5a96e8b 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -9,19 +9,55 @@ url = "https://atcoder.jp/contests/abc054/tasks/abc054_c"
 matching = "Words"
 meta = { using = ["permutohedron", "petgraph"] }
 
-[examples.abc057-b]
+[examples.abc057-b-naive]
+name = "ABC057: B - Checkpoints"
+url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
+matching = "Words"
+meta = { using = [] } # 下3つと比較するため
+
+[examples.abc057-b-proconio]
+name = "ABC057: B - Checkpoints"
+url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
+matching = "Words"
+meta = { using = ["proconio"] }
+
+[examples.abc057-b-text-io]
 name = "ABC057: B - Checkpoints"
 url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
 matching = "Words"
 meta = { using = ["text_io"] }
 
+[examples.abc057-b-whiteread]
+name = "ABC057: B - Checkpoints"
+url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
+matching = "Words"
+meta = { using = ["whiteread"] }
+
 [examples.abc084-d]
 name = "ABC084: D - 2017-like Number"
 url = "https://atcoder.jp/contests/abc084/tasks/abc084_d"
 matching = "Words"
 meta = { using = ["itertools-num", "primal"] }
 
-[examples.abc118-b]
+[examples.abc118-b-naive]
+name = "ABC118: B - Foods Loved by Everyone"
+url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
+matching = "Words"
+meta = { using = [] } # 下3つと比較するため
+
+[examples.abc118-b-proconio]
+name = "ABC118: B - Foods Loved by Everyone"
+url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
+matching = "Words"
+meta = { using = ["proconio"] }
+
+[examples.abc118-b-text-io]
+name = "ABC118: B - Foods Loved by Everyone"
+url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
+matching = "Words"
+meta = { using = ["text-io"] }
+
+[examples.abc118-b-whiteread]
 name = "ABC118: B - Foods Loved by Everyone"
 url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
 matching = "Words"
@@ -33,12 +69,30 @@ url = "https://atcoder.jp/contests/abc120/tasks/abc120_d"
 matching = "Words"
 meta = { using = ["union-find"] }
 
-[examples.abc121-b]
+[examples.abc121-b-naive]
+name = "ABC121: B - Can you solve this?"
+url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
+matching = "Words"
+meta = { using = [] } # 下3つと比較するため
+
+[examples.abc121-b-proconio]
 name = "ABC121: B - Can you solve this?"
 url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
 matching = "Words"
 meta = { using = ["proconio"] }
 
+[examples.abc121-b-text-io]
+name = "ABC121: B - Can you solve this?"
+url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
+matching = "Words"
+meta = { using = ["text_io"] }
+
+[examples.abc121-b-whiteread]
+name = "ABC121: B - Can you solve this?"
+url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
+matching = "Words"
+meta = { using = ["whiteread"] }
+
 [examples.abc129-f]
 name = "ABC129: F - Takahashi's Basics in Education and Learning"
 url = "https://atcoder.jp/contests/abc129/tasks/abc129_f"

From 21b945c89228b8fe622d5296e2df29c7f6a63fe1 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sun, 12 Jan 2020 04:04:49 +0900
Subject: [PATCH 20/39] Remove dead arms

---
 examples/abc054-c.rs   | 3 ---
 examples/apg4b-ex25.rs | 9 ---------
 examples/arc084-c.rs   | 6 ------
 3 files changed, 18 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index a1cde35..4f19669 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -19,9 +19,6 @@ fn main() {
         (_1based) => {
             read!(usize) - 1
         };
-        (_bytes) => {
-            read!(String).into_bytes()
-        };
         ($ty:ty) => {
             input.next().unwrap().parse::<$ty>().unwrap()
         };
diff --git a/examples/apg4b-ex25.rs b/examples/apg4b-ex25.rs
index 81e2cd1..369d5f4 100644
--- a/examples/apg4b-ex25.rs
+++ b/examples/apg4b-ex25.rs
@@ -15,15 +15,6 @@ fn main() {
         ([$tt:tt; $n:expr]) => {
             (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
         };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        (_1based) => {
-            read!(usize) - 1
-        };
-        (_bytes) => {
-            read!(String).into_bytes()
-        };
         ($ty:ty) => {
             input.next().unwrap().parse::<$ty>().unwrap()
         };
diff --git a/examples/arc084-c.rs b/examples/arc084-c.rs
index 558fd6e..0936d67 100644
--- a/examples/arc084-c.rs
+++ b/examples/arc084-c.rs
@@ -15,12 +15,6 @@ fn main() {
         (($($tt:tt),+)) => {
             ($(read!($tt)),*)
         };
-        (_1based) => {
-            read!(usize) - 1
-        };
-        (_bytes) => {
-            read!(String).into_bytes()
-        };
         ($ty:ty) => {
             input.next().unwrap().parse::<$ty>().unwrap()
         };

From 012a8b73e647a586c014d86b8e2c4a13dba28125 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Sun, 12 Jan 2020 17:41:39 +0900
Subject: [PATCH 21/39] Modify some examples

---
 examples/abc054-c.rs | 12 ++++--------
 examples/abc129-f.rs | 14 +++++++-------
 2 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index 4f19669..3629ddf 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -1,7 +1,6 @@
 // https://atcoder.jp/contests/abc054/tasks/abc054_c
 
-use petgraph::csr::Csr;
-use petgraph::Undirected;
+use petgraph::matrix_graph::UnMatrix;
 
 use std::io::{self, Read as _};
 
@@ -27,14 +26,11 @@ fn main() {
     let (n, m) = read!((usize, usize));
     let abs = read!([(_1based, _1based); m]);
 
-    let mut graph = Csr::<(), (), Undirected, usize>::with_nodes(n);
-    for (a, b) in abs {
-        graph.add_edge(a, b, ());
-    }
+    let graph = UnMatrix::<(), (), Option<()>, usize>::from_edges(abs);
     let mut ans = 0;
-    let mut nodes = (0..n).collect::<Vec<_>>();
+    let mut nodes = (0..n).map(Into::into).collect::<Vec<_>>();
     permutohedron::heap_recursive(&mut nodes, |nodes| {
-        if nodes[0] == 0 && nodes.windows(2).all(|w| graph.contains_edge(w[0], w[1])) {
+        if nodes[0] == 0.into() && nodes.windows(2).all(|w| graph.has_edge(w[0], w[1])) {
             ans += 1;
         }
     });
diff --git a/examples/abc129-f.rs b/examples/abc129-f.rs
index ad0244f..6f5b9eb 100644
--- a/examples/abc129-f.rs
+++ b/examples/abc129-f.rs
@@ -27,12 +27,12 @@ fn main() {
         count(10u64.pow(d)) - count(10u64.pow(d - 1))
     };
 
-    let ans = (1..=18).fold(array![[Z(0), Z::checked(a), Z(1)]], |acc, d| {
+    let ans = (1..=18).fold(array![[Z::new(0), Z::new(a), Z::new(1)]], |acc, d| {
         acc.dot(
             &array![
-                [Z::checked(10u64.pow(d)), Z(0), Z(0)],
-                [Z(1), Z(1), Z(0)],
-                [Z(0), Z::checked(b), Z(1)],
+                [Z::new(10u64.pow(d)), Z::new(0), Z::new(0)],
+                [Z::new(1), Z::new(1), Z::new(0)],
+                [Z::new(0), Z::new(b), Z::new(1)],
             ]
             .matrix_power(count(d)),
         )
@@ -66,7 +66,7 @@ thread_local! {
 struct Z(u64);
 
 impl Z {
-    fn checked(val: u64) -> Self {
+    fn new(val: u64) -> Self {
         Self(val % MOD.with(Cell::get))
     }
 }
@@ -75,7 +75,7 @@ impl Add for Z {
     type Output = Self;
 
     fn add(self, rhs: Self) -> Self {
-        Self::checked(self.0 + rhs.0)
+        Self::new(self.0 + rhs.0)
     }
 }
 
@@ -91,7 +91,7 @@ impl Mul for Z {
     type Output = Self;
 
     fn mul(self, rhs: Self) -> Self {
-        Self::checked(self.0 * rhs.0)
+        Self::new(self.0 * rhs.0)
     }
 }
 

From 03a8d149448d4f5e73894a18f321f218294f9ebb Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Mon, 13 Jan 2020 08:07:15 +0900
Subject: [PATCH 22/39] Add an example for ABC151-D

---
 examples/abc151-d.rs          | 76 +++++++++++++++++++++++++++++++++++
 test-with-generated-opts.toml |  6 +++
 2 files changed, 82 insertions(+)
 create mode 100644 examples/abc151-d.rs

diff --git a/examples/abc151-d.rs b/examples/abc151-d.rs
new file mode 100644
index 0000000..c4eb931
--- /dev/null
+++ b/examples/abc151-d.rs
@@ -0,0 +1,76 @@
+// https://atcoder.jp/contests/abc151/tasks/abc151_d
+
+use ndarray::Array;
+use smallvec::{smallvec, SmallVec};
+
+use std::collections::VecDeque;
+use std::io::{self, Read as _};
+use std::iter;
+
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules! read {
+        (($($tt:tt),+)) => {
+            ($(read!($tt)),*)
+        };
+        (_maze<$c:literal, ($h:expr, $w:expr)>) => {
+            Array::from_shape_vec(
+                ($h, $w),
+                (0..$h)
+                    .fold(vec![], |mut acc, _| {
+                        acc.extend(input.next().unwrap().bytes().map(|c| c == $c));
+                        acc
+                    }),
+            )
+            .unwrap()
+        };
+        ($ty:ty) => {
+            input.next().unwrap().parse::<$ty>().unwrap()
+        };
+    }
+
+    let (h, w) = read!((usize, usize));
+    let maze = read!(_maze<b'.', (h, w)>);
+
+    let neighbors = Array::from_shape_fn((h, w), |(i, j)| -> SmallVec<[_; 4]> {
+        let mut neighbors = smallvec![];
+        macro_rules! push {
+            (if $cond:expr => $pos:expr) => {
+                if $cond && maze[$pos] {
+                    neighbors.push($pos);
+                }
+            };
+        }
+        push!(if 0 < i     => (i - 1, j));
+        push!(if i < h - 1 => (i + 1, j));
+        push!(if 0 < j     => (i, j - 1));
+        push!(if j < w - 1 => (i, j + 1));
+        neighbors
+    });
+
+    let ans = (0..h)
+        .flat_map(|i| (0..w).map(move |j| (i, j)))
+        .filter(|&p| maze[p])
+        .map(|start| {
+            let mut longest = 0;
+            let mut queue = iter::once((start, 0)).collect::<VecDeque<_>>();
+            let mut unvisited = maze.clone();
+            unvisited[start] = false;
+
+            while let Some((pos, dist)) = queue.pop_front() {
+                for &neighbor in &neighbors[pos] {
+                    if unvisited[neighbor] {
+                        unvisited[neighbor] = false;
+                        longest = dist + 1;
+                        queue.push_back((neighbor, longest));
+                    }
+                }
+            }
+            longest
+        })
+        .max()
+        .unwrap();
+    println!("{}", ans);
+}
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 5a96e8b..f8c7a4d 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -123,6 +123,12 @@ url = "https://atcoder.jp/contests/abc150/tasks/abc150_d"
 matching = "Words"
 meta = { using = ["itertools", "num"] }
 
+[examples.abc151-d]
+name = "ABC151: D - Maze Master"
+url = "https://atcoder.jp/contests/abc151/tasks/abc151_d"
+matching = "Words"
+meta = { using = ["ndarray", "smallvec"] }
+
 [examples.apg4b-a]
 name = "APG4b: A - 1.00.はじめに"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_a"

From 2df3e1e18ba6a19d1bd3bcc904cda060c0d05c2c Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Tue, 14 Jan 2020 19:56:17 +0900
Subject: [PATCH 23/39] Collapse `read!`s

---
 examples/abc054-c.rs       | 21 +++++++--------------
 examples/abc057-b-naive.rs | 12 +++---------
 examples/abc084-d.rs       | 16 +++++-----------
 examples/abc118-b-naive.rs | 21 ++++++---------------
 examples/abc120-d.rs       | 25 +++++++++----------------
 examples/abc121-b-naive.rs | 12 +++---------
 examples/abc150-d.rs       | 12 +++---------
 examples/apg4b-ex25.rs     | 19 +++++++------------
 examples/arc065-c.rs       |  8 +++++++-
 examples/arc084-c.rs       | 12 +++---------
 examples/atc001-b.rs       | 17 ++++++-----------
 11 files changed, 59 insertions(+), 116 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index 3629ddf..6f7a15e 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -9,22 +9,15 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        (_1based) => {
-            read!(usize) - 1
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        (_1based)           => { read!(usize) - 1 };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
-    let (n, m) = read!((usize, usize));
-    let abs = read!([(_1based, _1based); m]);
+    let n = read!(usize);
+    let abs = read!([(_1based, _1based)]);
 
     let graph = UnMatrix::<(), (), Option<()>, usize>::from_edges(abs);
     let mut ans = 0;
diff --git a/examples/abc057-b-naive.rs b/examples/abc057-b-naive.rs
index 6ff92c8..3e96f69 100644
--- a/examples/abc057-b-naive.rs
+++ b/examples/abc057-b-naive.rs
@@ -7,15 +7,9 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
     let (n, m) = read!((usize, usize));
diff --git a/examples/abc084-d.rs b/examples/abc084-d.rs
index 9aa11b8..5d57b7b 100644
--- a/examples/abc084-d.rs
+++ b/examples/abc084-d.rs
@@ -10,19 +10,13 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
-    let q = read!(usize);
-    let lrs = read!([(usize, usize); q]);
+    let lrs = read!([(usize, usize)]);
 
     let max = lrs.iter().map(|&(_, r)| r).max().unwrap();
     let sieve = Sieve::new(max);
diff --git a/examples/abc118-b-naive.rs b/examples/abc118-b-naive.rs
index 1cd1e39..d79c646 100644
--- a/examples/abc118-b-naive.rs
+++ b/examples/abc118-b-naive.rs
@@ -8,24 +8,15 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        (_1based) => {
-            read!(usize) - 1
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        (_1based)           => { read!(usize) - 1 };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
     let (n, _) = read!((usize, usize));
-    let a = (0..n)
-        .map(|_| read!([_1based; read!(usize)]))
-        .collect::<Vec<_>>();
+    let a = read!([[_1based]; n]);
 
     let ans = a
         .into_iter()
diff --git a/examples/abc120-d.rs b/examples/abc120-d.rs
index 8425a07..6ce77b9 100644
--- a/examples/abc120-d.rs
+++ b/examples/abc120-d.rs
@@ -9,31 +9,24 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        (_1based) => {
-            read!(usize) - 1
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        (_1based)           => { read!(usize) - 1 };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
-    let (n, m) = read!((usize, usize));
-    let abs = read!([(_1based, _1based); m]);
+    let n = read!(usize);
+    let abs = read!([(_1based, _1based)]);
 
     let max = n * (n - 1) / 2;
     let mut uf = QuickFindUf::<UnionBySize>::new(n);
     let mut ans_rev = vec![max];
 
     ans_rev.extend(abs.into_iter().rev().scan(max, |cur, (a, b)| {
-        let p = uf.get(a).size() * uf.get(b).size();
+        let prod = uf.get(a).size() * uf.get(b).size();
         if uf.union(a, b) {
-            *cur -= p;
+            *cur -= prod;
         }
         Some(*cur)
     }));
diff --git a/examples/abc121-b-naive.rs b/examples/abc121-b-naive.rs
index 951e19d..1f9aecb 100644
--- a/examples/abc121-b-naive.rs
+++ b/examples/abc121-b-naive.rs
@@ -8,15 +8,9 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
     let (n, m, c) = read!((usize, usize, i32));
diff --git a/examples/abc150-d.rs b/examples/abc150-d.rs
index bcc7f71..086897a 100644
--- a/examples/abc150-d.rs
+++ b/examples/abc150-d.rs
@@ -9,15 +9,9 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
     let (n, m) = read!((usize, usize));
diff --git a/examples/apg4b-ex25.rs b/examples/apg4b-ex25.rs
index 369d5f4..74aabfa 100644
--- a/examples/apg4b-ex25.rs
+++ b/examples/apg4b-ex25.rs
@@ -1,29 +1,24 @@
 // https://atcoder.jp/contests/APG4b/tasks/APG4b_bx
 
-#![allow(clippy::many_single_char_names)]
-
 use fixedbitset::FixedBitSet;
 use itertools::Itertools as _;
 
 use std::io::{self, Read as _};
 
+#[allow(clippy::many_single_char_names)]
 fn main() {
     let mut input = "".to_owned();
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
+    #[rustfmt::skip]
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
-    let n = read!(usize);
-    let a = read!([usize; n]);
-    let m = read!(usize);
-    let b = read!([usize; m]);
+    let a = read!([usize]);
+    let b = read!([usize]);
     let arg0 = read!(String);
     let args = read!([usize; if arg0 == "subtract" { 1 } else { 0 }]);
 
diff --git a/examples/arc065-c.rs b/examples/arc065-c.rs
index 61c7395..52599e2 100644
--- a/examples/arc065-c.rs
+++ b/examples/arc065-c.rs
@@ -8,8 +8,14 @@ use std::io::{self, Read as _};
 fn main() {
     let mut input = "".to_owned();
     io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    #[rustfmt::skip]
+    macro_rules! read {
+        (_bytes) => { read!(String).into_bytes() };
+        ($ty:ty) => { input.next().unwrap().parse::<$ty>().unwrap() };
+    }
 
-    let s = input.trim_end().as_bytes().to_owned();
+    let s = read!(_bytes);
 
     lazy_static! {
         static ref R: Regex = Regex::new(r"\A(dream(er)?|eraser?)*\z").unwrap();
diff --git a/examples/arc084-c.rs b/examples/arc084-c.rs
index 0936d67..9076120 100644
--- a/examples/arc084-c.rs
+++ b/examples/arc084-c.rs
@@ -9,15 +9,9 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
     let n = read!(usize);
diff --git a/examples/atc001-b.rs b/examples/atc001-b.rs
index ff4ccf2..5fb8e15 100644
--- a/examples/atc001-b.rs
+++ b/examples/atc001-b.rs
@@ -9,19 +9,14 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        ([$tt:tt; $n:expr]) => {
-            (0..$n).map(|_| read!($tt)).collect::<Vec<_>>()
-        };
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
-    let (n, q) = read!((usize, usize));
-    let pabs = read!([(u8, usize, usize); q]);
+    let n = read!(usize);
+    let pabs = read!([(u8, usize, usize)]);
 
     let mut uf = UnionFind::new(n);
     buf_print(|stdout| {

From 61618c096df7d5734f8de0dfd9d46df54f0270dc Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Tue, 14 Jan 2020 22:45:49 +0900
Subject: [PATCH 24/39] Add dead arms again

---
 examples/abc054-c.rs       |  2 +-
 examples/abc057-b-naive.rs |  1 +
 examples/abc118-b-naive.rs |  2 +-
 examples/abc120-d.rs       |  2 +-
 examples/abc121-b-naive.rs |  1 +
 examples/abc150-d.rs       |  1 +
 examples/abc151-d.rs       | 10 ++++------
 examples/apg4b-ex25.rs     |  2 +-
 examples/arc065-c.rs       |  8 +++++---
 examples/arc084-c.rs       |  1 +
 10 files changed, 17 insertions(+), 13 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index 6f7a15e..fadf663 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -9,10 +9,10 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
+        (_1based)           => { read!(usize) - 1 };
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
         (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        (_1based)           => { read!(usize) - 1 };
         ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
diff --git a/examples/abc057-b-naive.rs b/examples/abc057-b-naive.rs
index 3e96f69..5ccb551 100644
--- a/examples/abc057-b-naive.rs
+++ b/examples/abc057-b-naive.rs
@@ -7,6 +7,7 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
         (($($tt:tt),+))     => { ($(read!($tt)),*) };
         ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
diff --git a/examples/abc118-b-naive.rs b/examples/abc118-b-naive.rs
index d79c646..1fb81a3 100644
--- a/examples/abc118-b-naive.rs
+++ b/examples/abc118-b-naive.rs
@@ -8,10 +8,10 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
+        (_1based)           => { read!(usize) - 1 };
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
         (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        (_1based)           => { read!(usize) - 1 };
         ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
diff --git a/examples/abc120-d.rs b/examples/abc120-d.rs
index 6ce77b9..a56b442 100644
--- a/examples/abc120-d.rs
+++ b/examples/abc120-d.rs
@@ -9,10 +9,10 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
+        (_1based)           => { read!(usize) - 1 };
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
         (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        (_1based)           => { read!(usize) - 1 };
         ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
diff --git a/examples/abc121-b-naive.rs b/examples/abc121-b-naive.rs
index 1f9aecb..9493bea 100644
--- a/examples/abc121-b-naive.rs
+++ b/examples/abc121-b-naive.rs
@@ -8,6 +8,7 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
         (($($tt:tt),+))     => { ($(read!($tt)),*) };
         ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
diff --git a/examples/abc150-d.rs b/examples/abc150-d.rs
index 086897a..f130da6 100644
--- a/examples/abc150-d.rs
+++ b/examples/abc150-d.rs
@@ -9,6 +9,7 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
         (($($tt:tt),+))     => { ($(read!($tt)),*) };
         ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
diff --git a/examples/abc151-d.rs b/examples/abc151-d.rs
index c4eb931..72c90ac 100644
--- a/examples/abc151-d.rs
+++ b/examples/abc151-d.rs
@@ -12,9 +12,6 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
-        (($($tt:tt),+)) => {
-            ($(read!($tt)),*)
-        };
         (_maze<$c:literal, ($h:expr, $w:expr)>) => {
             Array::from_shape_vec(
                 ($h, $w),
@@ -26,9 +23,10 @@ fn main() {
             )
             .unwrap()
         };
-        ($ty:ty) => {
-            input.next().unwrap().parse::<$ty>().unwrap()
-        };
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
     let (h, w) = read!((usize, usize));
diff --git a/examples/apg4b-ex25.rs b/examples/apg4b-ex25.rs
index 74aabfa..bba58ea 100644
--- a/examples/apg4b-ex25.rs
+++ b/examples/apg4b-ex25.rs
@@ -10,10 +10,10 @@ fn main() {
     let mut input = "".to_owned();
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
-    #[rustfmt::skip]
     macro_rules! read {
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
         ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
diff --git a/examples/arc065-c.rs b/examples/arc065-c.rs
index 52599e2..1c1059f 100644
--- a/examples/arc065-c.rs
+++ b/examples/arc065-c.rs
@@ -9,10 +9,12 @@ fn main() {
     let mut input = "".to_owned();
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
-    #[rustfmt::skip]
     macro_rules! read {
-        (_bytes) => { read!(String).into_bytes() };
-        ($ty:ty) => { input.next().unwrap().parse::<$ty>().unwrap() };
+        (_bytes)            => { read!(String).into_bytes() };
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
+        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
+        (($($tt:tt),+))     => { ($(read!($tt)),*) };
+        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
     }
 
     let s = read!(_bytes);
diff --git a/examples/arc084-c.rs b/examples/arc084-c.rs
index 9076120..269b222 100644
--- a/examples/arc084-c.rs
+++ b/examples/arc084-c.rs
@@ -9,6 +9,7 @@ fn main() {
     io::stdin().read_to_string(&mut input).unwrap();
     let mut input = input.split_whitespace();
     macro_rules! read {
+        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
         (($($tt:tt),+))     => { ($(read!($tt)),*) };
         ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };

From e80232e38fa42d82de857dfe84e64f43a73da3b6 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Wed, 15 Jan 2020 00:07:20 +0900
Subject: [PATCH 25/39] `leak` strings to carve out to functions

---
 examples/abc054-c.rs        | 12 ++++++++----
 examples/abc057-b-naive.rs  | 12 ++++++++----
 examples/abc084-d.rs        | 12 ++++++++----
 examples/abc118-b-naive.rs  | 12 ++++++++----
 examples/abc120-d.rs        | 12 ++++++++----
 examples/abc121-b-naive.rs  | 12 ++++++++----
 examples/abc129-f.rs        | 12 ++++++++----
 examples/abc142-d.rs        | 12 ++++++++----
 examples/abc144-d.rs        | 12 ++++++++----
 examples/abc150-d.rs        | 12 ++++++++----
 examples/abc151-d.rs        | 12 ++++++++----
 examples/apg4b-ex25.rs      | 13 ++++++++-----
 examples/apg4b-ex26.rs      | 12 ++++++++----
 examples/arc065-c.rs        | 12 ++++++++----
 examples/arc084-c.rs        | 12 ++++++++----
 examples/atc001-b.rs        | 12 ++++++++----
 examples/atc002-b.rs        | 12 ++++++++----
 examples/sumitrust2019-c.rs | 12 ++++++++----
 18 files changed, 144 insertions(+), 73 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index fadf663..fb59452 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -2,12 +2,10 @@
 
 use petgraph::matrix_graph::UnMatrix;
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         (_1based)           => { read!(usize) - 1 };
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
@@ -29,3 +27,9 @@ fn main() {
     });
     println!("{}", ans);
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/abc057-b-naive.rs b/examples/abc057-b-naive.rs
index 5ccb551..4b9bdc3 100644
--- a/examples/abc057-b-naive.rs
+++ b/examples/abc057-b-naive.rs
@@ -1,11 +1,9 @@
 // https://atcoder.jp/contests/abc057/tasks/abc057_b
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
@@ -26,3 +24,9 @@ fn main() {
         println!("{}", j + 1);
     }
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/abc084-d.rs b/examples/abc084-d.rs
index 5d57b7b..7f3be68 100644
--- a/examples/abc084-d.rs
+++ b/examples/abc084-d.rs
@@ -3,12 +3,10 @@
 use itertools_num::ItertoolsNum as _;
 use primal::Sieve;
 
-use std::io::{self, BufWriter, Read as _, StdoutLock, Write as _};
+use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
@@ -34,6 +32,12 @@ fn main() {
     });
 }
 
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
+
 fn buf_print(f: impl FnOnce(&mut BufWriter<StdoutLock>)) {
     let stdout = io::stdout();
     let mut stdout = BufWriter::new(stdout.lock());
diff --git a/examples/abc118-b-naive.rs b/examples/abc118-b-naive.rs
index 1fb81a3..d068859 100644
--- a/examples/abc118-b-naive.rs
+++ b/examples/abc118-b-naive.rs
@@ -1,12 +1,10 @@
 // https://atcoder.jp/contests/abc118/tasks/abc118_b
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 use std::ops::{BitAnd, BitOr};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         (_1based)           => { read!(usize) - 1 };
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
@@ -25,3 +23,9 @@ fn main() {
         .count_ones();
     println!("{}", ans);
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/abc120-d.rs b/examples/abc120-d.rs
index a56b442..b436377 100644
--- a/examples/abc120-d.rs
+++ b/examples/abc120-d.rs
@@ -2,12 +2,10 @@
 
 use union_find::{QuickFindUf, UnionBySize, UnionFind as _};
 
-use std::io::{self, BufWriter, Read as _, StdoutLock, Write as _};
+use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         (_1based)           => { read!(usize) - 1 };
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
@@ -41,6 +39,12 @@ fn main() {
     });
 }
 
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
+
 fn buf_print(f: impl FnOnce(&mut BufWriter<StdoutLock>)) {
     let stdout = io::stdout();
     let mut stdout = BufWriter::new(stdout.lock());
diff --git a/examples/abc121-b-naive.rs b/examples/abc121-b-naive.rs
index 9493bea..d167510 100644
--- a/examples/abc121-b-naive.rs
+++ b/examples/abc121-b-naive.rs
@@ -1,12 +1,10 @@
 // https://atcoder.jp/contests/abc121/tasks/abc121_b
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 #[allow(clippy::many_single_char_names)]
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
@@ -23,3 +21,9 @@ fn main() {
         .count();
     println!("{}", ans);
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/abc129-f.rs b/examples/abc129-f.rs
index 6f5b9eb..72d68a8 100644
--- a/examples/abc129-f.rs
+++ b/examples/abc129-f.rs
@@ -8,13 +8,11 @@ use num_derive::{One, Zero};
 
 use std::cell::Cell;
 use std::cmp;
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 use std::ops::{Add, Div, Mul, Sub};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     defmac!(read => input.next().unwrap().parse().unwrap());
 
     let (l, a, b, m): (u64, u64, u64, u64) = (read!(), read!(), read!(), read!());
@@ -102,3 +100,9 @@ impl Div for Z {
         unreachable!("should not be performed")
     }
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/abc142-d.rs b/examples/abc142-d.rs
index feb0953..a185e5e 100644
--- a/examples/abc142-d.rs
+++ b/examples/abc142-d.rs
@@ -5,12 +5,10 @@ use primal::Sieve;
 
 use std::cmp::max;
 use std::collections::HashSet;
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     defmac!(read => input.next().unwrap().parse().unwrap());
 
     let (a, b): (usize, usize) = (read!(), read!());
@@ -26,3 +24,9 @@ fn main() {
     };
     println!("{}", (&bases(a) & &bases(b)).len() + 1);
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/abc144-d.rs b/examples/abc144-d.rs
index 699fdb4..428d36a 100644
--- a/examples/abc144-d.rs
+++ b/examples/abc144-d.rs
@@ -3,12 +3,10 @@
 use defmac::defmac;
 
 use std::f64::consts::PI;
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     defmac!(read => input.next().unwrap().parse().unwrap());
 
     let (a, b, x): (f64, f64, f64) = (read!(), read!(), read!());
@@ -21,3 +19,9 @@ fn main() {
         };
     println!("{}", ans);
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/abc150-d.rs b/examples/abc150-d.rs
index f130da6..f621e70 100644
--- a/examples/abc150-d.rs
+++ b/examples/abc150-d.rs
@@ -2,12 +2,10 @@
 
 use itertools::Itertools as _;
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
@@ -27,3 +25,9 @@ fn main() {
     let ans = (m + x0) / (2 * x0);
     println!("{}", ans);
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/abc151-d.rs b/examples/abc151-d.rs
index 72c90ac..d6800ee 100644
--- a/examples/abc151-d.rs
+++ b/examples/abc151-d.rs
@@ -4,13 +4,11 @@ use ndarray::Array;
 use smallvec::{smallvec, SmallVec};
 
 use std::collections::VecDeque;
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 use std::iter;
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         (_maze<$c:literal, ($h:expr, $w:expr)>) => {
             Array::from_shape_vec(
@@ -72,3 +70,9 @@ fn main() {
         .unwrap();
     println!("{}", ans);
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/apg4b-ex25.rs b/examples/apg4b-ex25.rs
index bba58ea..c83c730 100644
--- a/examples/apg4b-ex25.rs
+++ b/examples/apg4b-ex25.rs
@@ -3,13 +3,11 @@
 use fixedbitset::FixedBitSet;
 use itertools::Itertools as _;
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 #[allow(clippy::many_single_char_names)]
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
@@ -52,7 +50,6 @@ fn symmetric_diff(a: &FixedBitSet, b: &FixedBitSet) -> FixedBitSet {
 }
 
 fn subtract(mut a: FixedBitSet, x: usize) -> FixedBitSet {
-    // > xは存在することが保証される。
     a.set(x, false);
     a
 }
@@ -64,3 +61,9 @@ fn increment(a: &FixedBitSet) -> FixedBitSet {
 fn decrement(a: &FixedBitSet) -> FixedBitSet {
     a.ones().map(|x| (x + 49) % 50).collect()
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/apg4b-ex26.rs b/examples/apg4b-ex26.rs
index ecc0c9a..09c8cb7 100644
--- a/examples/apg4b-ex26.rs
+++ b/examples/apg4b-ex26.rs
@@ -5,14 +5,12 @@ use maplit::hashmap;
 use matches::matches;
 
 use std::collections::HashMap;
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 use std::str::FromStr;
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
     let mut env = hashmap!();
-    for line in input.lines().skip(1) {
+    for line in read_to_static(io::stdin()).lines().skip(1) {
         line.parse::<Stmt>().unwrap().eval(&mut env);
     }
 }
@@ -233,3 +231,9 @@ impl VecExpr {
         }
     }
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/arc065-c.rs b/examples/arc065-c.rs
index 1c1059f..29ba070 100644
--- a/examples/arc065-c.rs
+++ b/examples/arc065-c.rs
@@ -3,12 +3,10 @@
 use lazy_static::lazy_static;
 use regex::bytes::Regex;
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         (_bytes)            => { read!(String).into_bytes() };
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
@@ -24,3 +22,9 @@ fn main() {
     };
     println!("{}", if R.is_match(&s) { "YES" } else { "NO" });
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/arc084-c.rs b/examples/arc084-c.rs
index 269b222..074a43f 100644
--- a/examples/arc084-c.rs
+++ b/examples/arc084-c.rs
@@ -2,12 +2,10 @@
 
 use superslice::Ext as _;
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
@@ -26,3 +24,9 @@ fn main() {
         .sum::<usize>();
     println!("{}", ans);
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/atc001-b.rs b/examples/atc001-b.rs
index 5fb8e15..d4941d6 100644
--- a/examples/atc001-b.rs
+++ b/examples/atc001-b.rs
@@ -2,12 +2,10 @@
 
 use petgraph::unionfind::UnionFind;
 
-use std::io::{self, BufWriter, Read as _, StdoutLock, Write as _};
+use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
         ([$tt:tt])          => { read!([$tt; read!(usize)]) };
         ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
@@ -33,6 +31,12 @@ fn main() {
     });
 }
 
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
+
 fn buf_print(f: impl FnOnce(&mut BufWriter<StdoutLock>)) {
     let stdout = io::stdout();
     let mut stdout = BufWriter::new(stdout.lock());
diff --git a/examples/atc002-b.rs b/examples/atc002-b.rs
index 741dc70..d79bc39 100644
--- a/examples/atc002-b.rs
+++ b/examples/atc002-b.rs
@@ -3,15 +3,19 @@
 use defmac::defmac;
 use num::BigUint;
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     defmac!(read => input.next().unwrap().parse().unwrap());
 
     let (n, m, p): (BigUint, BigUint, BigUint) = (read!(), read!(), read!());
 
     println!("{}", n.modpow(&p, &m));
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/examples/sumitrust2019-c.rs b/examples/sumitrust2019-c.rs
index cd9d5fd..5453aa3 100644
--- a/examples/sumitrust2019-c.rs
+++ b/examples/sumitrust2019-c.rs
@@ -3,12 +3,10 @@
 use defmac::defmac;
 use fixedbitset::FixedBitSet;
 
-use std::io::{self, Read as _};
+use std::io::{self, Read};
 
 fn main() {
-    let mut input = "".to_owned();
-    io::stdin().read_to_string(&mut input).unwrap();
-    let mut input = input.split_whitespace();
+    let mut input = read_to_static(io::stdin()).split_whitespace();
     defmac!(read => input.next().unwrap().parse().unwrap());
 
     let x: usize = read!();
@@ -23,3 +21,9 @@ fn main() {
     }
     println!("{}", u32::from(dp[x]));
 }
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}

From 257923104a92f589bd2423e5ceca590eb134fc43 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Wed, 15 Jan 2020 16:37:39 +0900
Subject: [PATCH 26/39] 'MacroTranscriber' can be `(..)`

---
 examples/abc054-c.rs       | 12 +++++++-----
 examples/abc057-b-naive.rs |  8 ++++----
 examples/abc084-d.rs       | 10 +++++-----
 examples/abc118-b-naive.rs | 12 +++++++-----
 examples/abc120-d.rs       | 14 ++++++++------
 examples/abc121-b-naive.rs |  8 ++++----
 examples/abc150-d.rs       |  8 ++++----
 examples/abc151-d.rs       |  8 ++++----
 examples/apg4b-ex25.rs     |  8 ++++----
 examples/arc065-c.rs       | 12 +++++++-----
 examples/arc084-c.rs       |  8 ++++----
 examples/atc001-b.rs       | 10 +++++-----
 12 files changed, 63 insertions(+), 55 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index fb59452..dab221c 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -7,11 +7,13 @@ use std::io::{self, Read};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        (_1based)           => { read!(usize) - 1 };
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let n = read!(usize);
diff --git a/examples/abc057-b-naive.rs b/examples/abc057-b-naive.rs
index 4b9bdc3..fc85f3d 100644
--- a/examples/abc057-b-naive.rs
+++ b/examples/abc057-b-naive.rs
@@ -5,10 +5,10 @@ use std::io::{self, Read};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let (n, m) = read!((usize, usize));
diff --git a/examples/abc084-d.rs b/examples/abc084-d.rs
index 7f3be68..318d167 100644
--- a/examples/abc084-d.rs
+++ b/examples/abc084-d.rs
@@ -8,10 +8,10 @@ use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let lrs = read!([(usize, usize)]);
@@ -24,7 +24,7 @@ fn main() {
         .collect::<Vec<u32>>();
 
     buf_print(|stdout| {
-        macro_rules! println { ($($tt:tt)*) => { writeln!(stdout, $($tt)*).unwrap() }; }
+        macro_rules! println(($($tt:tt)*) => (writeln!(stdout, $($tt)*).unwrap()));
 
         for (l, r) in lrs {
             println!("{}", nums[r] - nums[l - 1]);
diff --git a/examples/abc118-b-naive.rs b/examples/abc118-b-naive.rs
index d068859..5973826 100644
--- a/examples/abc118-b-naive.rs
+++ b/examples/abc118-b-naive.rs
@@ -6,11 +6,13 @@ use std::ops::{BitAnd, BitOr};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        (_1based)           => { read!(usize) - 1 };
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let (n, _) = read!((usize, usize));
diff --git a/examples/abc120-d.rs b/examples/abc120-d.rs
index b436377..81b8ea2 100644
--- a/examples/abc120-d.rs
+++ b/examples/abc120-d.rs
@@ -7,11 +7,13 @@ use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        (_1based)           => { read!(usize) - 1 };
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        (_1based) => {
+            read!(usize) - 1
+        };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let n = read!(usize);
@@ -31,7 +33,7 @@ fn main() {
     assert_eq!(ans_rev.pop(), Some(0));
 
     buf_print(|stdout| {
-        macro_rules! println { ($($tt:tt)*) => { writeln!(stdout, $($tt)*).unwrap() }; }
+        macro_rules! println(($($tt:tt)*) => (writeln!(stdout, $($tt)*).unwrap()));
 
         for x in ans_rev.into_iter().rev() {
             println!("{}", x);
diff --git a/examples/abc121-b-naive.rs b/examples/abc121-b-naive.rs
index d167510..33b4177 100644
--- a/examples/abc121-b-naive.rs
+++ b/examples/abc121-b-naive.rs
@@ -6,10 +6,10 @@ use std::io::{self, Read};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let (n, m, c) = read!((usize, usize, i32));
diff --git a/examples/abc150-d.rs b/examples/abc150-d.rs
index f621e70..9925316 100644
--- a/examples/abc150-d.rs
+++ b/examples/abc150-d.rs
@@ -7,10 +7,10 @@ use std::io::{self, Read};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let (n, m) = read!((usize, usize));
diff --git a/examples/abc151-d.rs b/examples/abc151-d.rs
index d6800ee..39c2125 100644
--- a/examples/abc151-d.rs
+++ b/examples/abc151-d.rs
@@ -21,10 +21,10 @@ fn main() {
             )
             .unwrap()
         };
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let (h, w) = read!((usize, usize));
diff --git a/examples/apg4b-ex25.rs b/examples/apg4b-ex25.rs
index c83c730..e68f73d 100644
--- a/examples/apg4b-ex25.rs
+++ b/examples/apg4b-ex25.rs
@@ -9,10 +9,10 @@ use std::io::{self, Read};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let a = read!([usize]);
diff --git a/examples/arc065-c.rs b/examples/arc065-c.rs
index 29ba070..cf533ed 100644
--- a/examples/arc065-c.rs
+++ b/examples/arc065-c.rs
@@ -8,11 +8,13 @@ use std::io::{self, Read};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        (_bytes)            => { read!(String).into_bytes() };
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        (_bytes) => {
+            read!(String).into_bytes()
+        };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let s = read!(_bytes);
diff --git a/examples/arc084-c.rs b/examples/arc084-c.rs
index 074a43f..b322de4 100644
--- a/examples/arc084-c.rs
+++ b/examples/arc084-c.rs
@@ -7,10 +7,10 @@ use std::io::{self, Read};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let n = read!(usize);
diff --git a/examples/atc001-b.rs b/examples/atc001-b.rs
index d4941d6..2c4ea57 100644
--- a/examples/atc001-b.rs
+++ b/examples/atc001-b.rs
@@ -7,10 +7,10 @@ use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        ([$tt:tt])          => { read!([$tt; read!(usize)]) };
-        ([$tt:tt; $n:expr]) => { (0..$n).map(|_| read!($tt)).collect::<Vec<_>>() };
-        (($($tt:tt),+))     => { ($(read!($tt)),*) };
-        ($ty:ty)            => { input.next().unwrap().parse::<$ty>().unwrap() };
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let n = read!(usize);
@@ -18,7 +18,7 @@ fn main() {
 
     let mut uf = UnionFind::new(n);
     buf_print(|stdout| {
-        macro_rules! println { ($($tt:tt)*) => { writeln!(stdout, $($tt)*).unwrap() }; }
+        macro_rules! println(($($tt:tt)*) => (writeln!(stdout, $($tt)*).unwrap()));
 
         for (p, a, b) in pabs {
             if p == 1 {

From b1d122ff1940af242e8a239b552514f88845c0d5 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Wed, 15 Jan 2020 16:59:55 +0900
Subject: [PATCH 27/39] Remove 'defmac's

---
 examples/abc129-f.rs          |  3 +--
 examples/abc142-d.rs          |  3 +--
 examples/abc144-d.rs          |  4 +---
 examples/atc002-b.rs          |  3 +--
 examples/sumitrust2019-c.rs   |  3 +--
 test-with-generated-opts.toml | 10 +++++-----
 6 files changed, 10 insertions(+), 16 deletions(-)

diff --git a/examples/abc129-f.rs b/examples/abc129-f.rs
index 72d68a8..46d43a4 100644
--- a/examples/abc129-f.rs
+++ b/examples/abc129-f.rs
@@ -1,6 +1,5 @@
 // https://atcoder.jp/contests/abc129/tasks/abc129_f
 
-use defmac::defmac;
 use derive_more::Display;
 use ndarray::{array, Array2, LinalgScalar};
 use num::{PrimInt, Unsigned};
@@ -13,7 +12,7 @@ use std::ops::{Add, Div, Mul, Sub};
 
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
-    defmac!(read => input.next().unwrap().parse().unwrap());
+    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
 
     let (l, a, b, m): (u64, u64, u64, u64) = (read!(), read!(), read!(), read!());
 
diff --git a/examples/abc142-d.rs b/examples/abc142-d.rs
index a185e5e..ca2ffb4 100644
--- a/examples/abc142-d.rs
+++ b/examples/abc142-d.rs
@@ -1,6 +1,5 @@
 // https://atcoder.jp/contests/abc142/tasks/abc142_d
 
-use defmac::defmac;
 use primal::Sieve;
 
 use std::cmp::max;
@@ -9,7 +8,7 @@ use std::io::{self, Read};
 
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
-    defmac!(read => input.next().unwrap().parse().unwrap());
+    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
 
     let (a, b): (usize, usize) = (read!(), read!());
 
diff --git a/examples/abc144-d.rs b/examples/abc144-d.rs
index 428d36a..47efb32 100644
--- a/examples/abc144-d.rs
+++ b/examples/abc144-d.rs
@@ -1,13 +1,11 @@
 // https://atcoder.jp/contests/abc144/tasks/abc144_d
 
-use defmac::defmac;
-
 use std::f64::consts::PI;
 use std::io::{self, Read};
 
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
-    defmac!(read => input.next().unwrap().parse().unwrap());
+    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
 
     let (a, b, x): (f64, f64, f64) = (read!(), read!(), read!());
 
diff --git a/examples/atc002-b.rs b/examples/atc002-b.rs
index d79bc39..54ae0bc 100644
--- a/examples/atc002-b.rs
+++ b/examples/atc002-b.rs
@@ -1,13 +1,12 @@
 // https://atcoder.jp/contests/atc002/tasks/atc002_b
 
-use defmac::defmac;
 use num::BigUint;
 
 use std::io::{self, Read};
 
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
-    defmac!(read => input.next().unwrap().parse().unwrap());
+    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
 
     let (n, m, p): (BigUint, BigUint, BigUint) = (read!(), read!(), read!());
 
diff --git a/examples/sumitrust2019-c.rs b/examples/sumitrust2019-c.rs
index 5453aa3..e24269a 100644
--- a/examples/sumitrust2019-c.rs
+++ b/examples/sumitrust2019-c.rs
@@ -1,13 +1,12 @@
 // https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c
 
-use defmac::defmac;
 use fixedbitset::FixedBitSet;
 
 use std::io::{self, Read};
 
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
-    defmac!(read => input.next().unwrap().parse().unwrap());
+    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
 
     let x: usize = read!();
 
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index f8c7a4d..356c816 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -97,7 +97,7 @@ meta = { using = ["whiteread"] }
 name = "ABC129: F - Takahashi's Basics in Education and Learning"
 url = "https://atcoder.jp/contests/abc129/tasks/abc129_f"
 matching = "Words"
-meta = { using = ["defmac", "derive_more", "ndarray", "num", "num-derive"] }
+meta = { using = ["derive_more", "ndarray", "num", "num-derive"] }
 
 [examples.abc141-c]
 name = "ABC141: C - Attack Survival"
@@ -109,13 +109,13 @@ meta = { using = ["proconio"] }
 name = "ABC142: D - Disjoint Set of Common Divisors"
 url = "https://atcoder.jp/contests/abc142/tasks/abc142_d"
 matching = "Words"
-meta = { using = ["defmac", "num-integer", "primal"] }
+meta = { using = ["num-integer", "primal"] }
 
 [examples.abc144-d]
 name = "ABC144: D - Water Bottle"
 url = "https://atcoder.jp/contests/abc144/tasks/abc144_d"
 matching = { FloatOr = { abs = 1e-6, rel = 1e-6 } }
-meta = { using = ["defmac", "libm"] }
+meta = { using = ["libm"] }
 
 [examples.abc150-d]
 name = "ABC150: D - Semi Common Multiple"
@@ -170,10 +170,10 @@ meta = { using = ["petgraph"] }
 name = "ATC002: B - n^p mod m"
 url = "https://atcoder.jp/contests/atc002/tasks/atc002_b"
 matching = "Words"
-meta = { using = ["defmac", "num"] }
+meta = { using = ["num"] }
 
 [examples.sumitrust2019-c]
 name = "Sumitomo Mitsui Trust Bank Programming Contest 2019: C - 100 to 105"
 url = "https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c"
 matching = "Words"
-meta = { using = ["defmac", "fixedbitset"] }
+meta = { using = ["fixedbitset"] }

From 39208de41e92625a5fe6b4eca66debdde5b4c03d Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Wed, 15 Jan 2020 18:06:00 +0900
Subject: [PATCH 28/39] Add examples for practice-A

---
 examples/practice-a-naive.rs     | 14 ++++++++++++++
 examples/practice-a-proconio.rs  | 14 ++++++++++++++
 examples/practice-a-text-io.rs   | 10 ++++++++++
 examples/practice-a-whiteread.rs | 11 +++++++++++
 test-with-generated-opts.toml    | 28 ++++++++++++++++++++++++++++
 5 files changed, 77 insertions(+)
 create mode 100644 examples/practice-a-naive.rs
 create mode 100644 examples/practice-a-proconio.rs
 create mode 100644 examples/practice-a-text-io.rs
 create mode 100644 examples/practice-a-whiteread.rs

diff --git a/examples/practice-a-naive.rs b/examples/practice-a-naive.rs
new file mode 100644
index 0000000..c16b51c
--- /dev/null
+++ b/examples/practice-a-naive.rs
@@ -0,0 +1,14 @@
+// https://atcoder.jp/contests/practice/tasks/practice_1
+
+use std::io::{self, Read as _};
+
+fn main() {
+    let mut input = "".to_owned();
+    io::stdin().read_to_string(&mut input).unwrap();
+    let mut input = input.split_whitespace();
+    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
+
+    let (a, b, c, s): (u32, u32, u32, String) = (read!(), read!(), read!(), read!());
+
+    println!("{} {}", a + b + c, s);
+}
diff --git a/examples/practice-a-proconio.rs b/examples/practice-a-proconio.rs
new file mode 100644
index 0000000..d7b635e
--- /dev/null
+++ b/examples/practice-a-proconio.rs
@@ -0,0 +1,14 @@
+// https://atcoder.jp/contests/practice/tasks/practice_1
+
+use proconio::input;
+
+fn main() {
+    input! {
+        a: u32,
+        b: u32,
+        c: u32,
+        s: String,
+    }
+
+    println!("{} {}", a + b + c, s);
+}
diff --git a/examples/practice-a-text-io.rs b/examples/practice-a-text-io.rs
new file mode 100644
index 0000000..cc39bde
--- /dev/null
+++ b/examples/practice-a-text-io.rs
@@ -0,0 +1,10 @@
+// https://atcoder.jp/contests/practice/tasks/practice_1
+
+use text_io::{read, try_read, try_scan};
+
+#[allow(clippy::many_single_char_names, clippy::try_err)]
+fn main() {
+    let (a, b, c, s): (u32, u32, u32, String) = (read!(), read!(), read!(), read!());
+
+    println!("{} {}", a + b + c, s);
+}
diff --git a/examples/practice-a-whiteread.rs b/examples/practice-a-whiteread.rs
new file mode 100644
index 0000000..16b4031
--- /dev/null
+++ b/examples/practice-a-whiteread.rs
@@ -0,0 +1,11 @@
+// https://atcoder.jp/contests/practice/tasks/practice_1
+
+use whiteread::Reader;
+
+fn main() {
+    let mut rdr = Reader::from_stdin_naive();
+
+    let (a, b, c, s) = rdr.p::<(u32, u32, u32, String)>();
+
+    println!("{} {}", a + b + c, s);
+}
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 356c816..5ab2017 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -172,6 +172,34 @@ url = "https://atcoder.jp/contests/atc002/tasks/atc002_b"
 matching = "Words"
 meta = { using = ["num"] }
 
+[examples.practice-a-naive]
+name = "practice contest: A - Welcome to AtCoder"
+url = "https://atcoder.jp/contests/practice/tasks/practice_1"
+matching = "Exact"
+alt_testcases = [{ in = "1\n2 3\ntest", out = "6 test\n" }, { in = "72\n128 256\nmyonmyon", out = "456 myonmyon\n" }]
+meta = { using = [] } # 下3つと比較するため
+
+[examples.practice-a-proconio]
+name = "practice contest: A - Welcome to AtCoder"
+url = "https://atcoder.jp/contests/practice/tasks/practice_1"
+matching = "Exact"
+alt_testcases = [{ in = "1\n2 3\ntest", out = "6 test\n" }, { in = "72\n128 256\nmyonmyon", out = "456 myonmyon\n" }]
+meta = { using = ["proconio"] }
+
+[examples.practice-a-text-io]
+name = "practice contest: A - Welcome to AtCoder"
+url = "https://atcoder.jp/contests/practice/tasks/practice_1"
+matching = "Exact"
+alt_testcases = [{ in = "1\n2 3\ntest", out = "6 test\n" }, { in = "72\n128 256\nmyonmyon", out = "456 myonmyon\n" }]
+meta = { using = ["text-io"] }
+
+[examples.practice-a-whiteread]
+name = "practice contest: A - Welcome to AtCoder"
+url = "https://atcoder.jp/contests/practice/tasks/practice_1"
+matching = "Exact"
+alt_testcases = [{ in = "1\n2 3\ntest", out = "6 test\n" }, { in = "72\n128 256\nmyonmyon", out = "456 myonmyon\n" }]
+meta = { using = ["whiteread"] }
+
 [examples.sumitrust2019-c]
 name = "Sumitomo Mitsui Trust Bank Programming Contest 2019: C - 100 to 105"
 url = "https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c"

From 3823bf1d0b522829f5ea2d67c73fdabc5c115482 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Wed, 15 Jan 2020 18:57:14 +0900
Subject: [PATCH 29/39] Modify `read!`s

---
 examples/abc054-c.rs       |  8 ++++----
 examples/abc118-b-naive.rs |  8 ++++----
 examples/abc120-d.rs       |  8 ++++----
 examples/abc151-d.rs       | 12 ++++++------
 examples/arc065-c.rs       |  8 ++++----
 5 files changed, 22 insertions(+), 22 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index dab221c..09a1435 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -7,17 +7,17 @@ use std::io::{self, Read};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        (_1based) => {
-            read!(usize) - 1
-        };
         ([$tt:tt]) => (read!([$tt; read!(usize)]));
         ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
         (($($tt:tt),+)) => (($(read!($tt)),*));
         ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+        ({ Usize1 }) => {
+            read!(usize) - 1
+        };
     }
 
     let n = read!(usize);
-    let abs = read!([(_1based, _1based)]);
+    let abs = read!([({ Usize1 }, { Usize1 })]);
 
     let graph = UnMatrix::<(), (), Option<()>, usize>::from_edges(abs);
     let mut ans = 0;
diff --git a/examples/abc118-b-naive.rs b/examples/abc118-b-naive.rs
index 5973826..925c6fa 100644
--- a/examples/abc118-b-naive.rs
+++ b/examples/abc118-b-naive.rs
@@ -6,17 +6,17 @@ use std::ops::{BitAnd, BitOr};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        (_1based) => {
-            read!(usize) - 1
-        };
         ([$tt:tt]) => (read!([$tt; read!(usize)]));
         ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
         (($($tt:tt),+)) => (($(read!($tt)),*));
         ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+        ({ Usize1 }) => {
+            read!(usize) - 1
+        };
     }
 
     let (n, _) = read!((usize, usize));
-    let a = read!([[_1based]; n]);
+    let a = read!([[{ Usize1 }]; n]);
 
     let ans = a
         .into_iter()
diff --git a/examples/abc120-d.rs b/examples/abc120-d.rs
index 81b8ea2..20d10ad 100644
--- a/examples/abc120-d.rs
+++ b/examples/abc120-d.rs
@@ -7,17 +7,17 @@ use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        (_1based) => {
-            read!(usize) - 1
-        };
         ([$tt:tt]) => (read!([$tt; read!(usize)]));
         ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
         (($($tt:tt),+)) => (($(read!($tt)),*));
         ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+        ({ Usize1 }) => {
+            read!(usize) - 1
+        };
     }
 
     let n = read!(usize);
-    let abs = read!([(_1based, _1based)]);
+    let abs = read!([({ Usize1 }, { Usize1 })]);
 
     let max = n * (n - 1) / 2;
     let mut uf = QuickFindUf::<UnionBySize>::new(n);
diff --git a/examples/abc151-d.rs b/examples/abc151-d.rs
index 39c2125..9a0c36b 100644
--- a/examples/abc151-d.rs
+++ b/examples/abc151-d.rs
@@ -10,7 +10,11 @@ use std::iter;
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        (_maze<$c:literal, ($h:expr, $w:expr)>) => {
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+        ({ Maze<$c:literal, ($h:expr, $w:expr)> }) => {
             Array::from_shape_vec(
                 ($h, $w),
                 (0..$h)
@@ -21,14 +25,10 @@ fn main() {
             )
             .unwrap()
         };
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
     }
 
     let (h, w) = read!((usize, usize));
-    let maze = read!(_maze<b'.', (h, w)>);
+    let maze = read!({ Maze<b'.', (h, w)> });
 
     let neighbors = Array::from_shape_fn((h, w), |(i, j)| -> SmallVec<[_; 4]> {
         let mut neighbors = smallvec![];
diff --git a/examples/arc065-c.rs b/examples/arc065-c.rs
index cf533ed..3760780 100644
--- a/examples/arc065-c.rs
+++ b/examples/arc065-c.rs
@@ -8,16 +8,16 @@ use std::io::{self, Read};
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
     macro_rules! read {
-        (_bytes) => {
-            read!(String).into_bytes()
-        };
         ([$tt:tt]) => (read!([$tt; read!(usize)]));
         ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
         (($($tt:tt),+)) => (($(read!($tt)),*));
         ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+        ({ Bytes }) => {
+            read!(String).into_bytes()
+        };
     }
 
-    let s = read!(_bytes);
+    let s = read!({ Bytes });
 
     lazy_static! {
         static ref R: Regex = Regex::new(r"\A(dream(er)?|eraser?)*\z").unwrap();

From dc9129d2deba8ac71a138fbe41d23911baf25d10 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Wed, 15 Jan 2020 19:10:24 +0900
Subject: [PATCH 30/39] Modify `abc054-c`

---
 examples/abc054-c.rs          | 17 ++++++++---------
 test-with-generated-opts.toml |  2 +-
 2 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index 09a1435..dc13738 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -1,6 +1,7 @@
 // https://atcoder.jp/contests/abc054/tasks/abc054_c
 
-use petgraph::matrix_graph::UnMatrix;
+use itertools::Itertools as _;
+use petgraph::graph::UnGraph;
 
 use std::io::{self, Read};
 
@@ -19,14 +20,12 @@ fn main() {
     let n = read!(usize);
     let abs = read!([({ Usize1 }, { Usize1 })]);
 
-    let graph = UnMatrix::<(), (), Option<()>, usize>::from_edges(abs);
-    let mut ans = 0;
-    let mut nodes = (0..n).map(Into::into).collect::<Vec<_>>();
-    permutohedron::heap_recursive(&mut nodes, |nodes| {
-        if nodes[0] == 0.into() && nodes.windows(2).all(|w| graph.has_edge(w[0], w[1])) {
-            ans += 1;
-        }
-    });
+    let graph = UnGraph::<(), (), usize>::from_edges(abs);
+    let ans = graph
+        .node_indices()
+        .permutations(n)
+        .filter(|p| p[0].index() == 0 && p.windows(2).all(|w| graph.contains_edge(w[0], w[1])))
+        .count();
     println!("{}", ans);
 }
 
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 5ab2017..c979590 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -7,7 +7,7 @@ testcases = "./target/test-with-generated-opts/testcases/{}"
 name = "ABC054: C - One-stroke Path"
 url = "https://atcoder.jp/contests/abc054/tasks/abc054_c"
 matching = "Words"
-meta = { using = ["permutohedron", "petgraph"] }
+meta = { using = ["itertools", "petgraph"] }
 
 [examples.abc057-b-naive]
 name = "ABC057: B - Checkpoints"

From 02e21ec6ae2701c15a40178a3334d463c5486899 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Wed, 15 Jan 2020 20:01:26 +0900
Subject: [PATCH 31/39] Add an example for ABC142-C

---
 examples/abc142-c.rs          | 29 +++++++++++++++++++++++++++++
 test-with-generated-opts.toml |  6 ++++++
 2 files changed, 35 insertions(+)
 create mode 100644 examples/abc142-c.rs

diff --git a/examples/abc142-c.rs b/examples/abc142-c.rs
new file mode 100644
index 0000000..45d2ad3
--- /dev/null
+++ b/examples/abc142-c.rs
@@ -0,0 +1,29 @@
+// https://atcoder.jp/contests/abc142/tasks/abc142_c
+
+use itertools::Itertools as _;
+use superslice::Ext2 as _;
+
+use std::io::{self, Read};
+
+fn main() {
+    let mut input = read_to_static(io::stdin()).split_whitespace();
+    macro_rules! read {
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+        ({ Isize1 }) => {
+            read!(isize) - 1
+        };
+    }
+
+    let mut a = read!([{ Isize1 }]);
+    a.invert_permutation();
+    println!("{}", a.iter().map(|a| a + 1).format(" "));
+}
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index c979590..e0c33d1 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -105,6 +105,12 @@ url = "https://atcoder.jp/contests/abc141/tasks/abc141_c"
 matching = "Words"
 meta = { using = ["proconio"] }
 
+[examples.abc142-c]
+name = "ABC142: C - Go to School"
+url = "https://atcoder.jp/contests/abc142/tasks/abc142_c"
+matching = "Words"
+meta = { using = ["itertools", "superslice"] }
+
 [examples.abc142-d]
 name = "ABC142: D - Disjoint Set of Common Divisors"
 url = "https://atcoder.jp/contests/abc142/tasks/abc142_d"

From 180ad350ae08c401d6007596d0b547a6a1a6d3c9 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Wed, 15 Jan 2020 20:50:14 +0900
Subject: [PATCH 32/39] Add an example for ABC073-D

---
 examples/abc073-d.rs          | 48 +++++++++++++++++++++++++++++++++++
 test-with-generated-opts.toml |  6 +++++
 2 files changed, 54 insertions(+)
 create mode 100644 examples/abc073-d.rs

diff --git a/examples/abc073-d.rs b/examples/abc073-d.rs
new file mode 100644
index 0000000..fff913d
--- /dev/null
+++ b/examples/abc073-d.rs
@@ -0,0 +1,48 @@
+// https://atcoder.jp/contests/abc073/tasks/abc073_d
+
+use itertools::Itertools as _;
+use petgraph::graph::{NodeIndex, UnGraph};
+
+use std::collections::HashMap;
+use std::io::{self, Read};
+
+fn main() {
+    let mut input = read_to_static(io::stdin()).split_whitespace();
+    macro_rules! read {
+        ([$tt:tt]) => (read!([$tt; read!(usize)]));
+        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
+        (($($tt:tt),+)) => (($(read!($tt)),*));
+        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+        ({ NodeIndex1 }) => {
+            NodeIndex::from(read!(u32) - 1)
+        };
+    }
+
+    let (_, m, r) = read!((usize, usize, usize));
+    let rs = read!([{ NodeIndex1 }; r]);
+    let abcs = read!([({ NodeIndex1 }, { NodeIndex1 }, u32); m]);
+
+    let graph = UnGraph::<(), u32>::from_edges(abcs);
+
+    let dijkstra = rs
+        .iter()
+        .map(|&r| {
+            let dijkstra = petgraph::algo::dijkstra(&graph, r, None, |e| *e.weight());
+            (r, dijkstra)
+        })
+        .collect::<HashMap<_, _>>();
+
+    let ans = rs
+        .into_iter()
+        .permutations(r)
+        .map(|rs| rs.windows(2).map(|w| dijkstra[&w[0]][&w[1]]).sum::<u32>())
+        .min()
+        .unwrap();
+    println!("{}", ans);
+}
+
+fn read_to_static(mut source: impl Read) -> &'static str {
+    let mut input = "".to_owned();
+    source.read_to_string(&mut input).unwrap();
+    Box::leak(input.into_boxed_str())
+}
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index e0c33d1..7b36baf 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -33,6 +33,12 @@ url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
 matching = "Words"
 meta = { using = ["whiteread"] }
 
+[examples.abc073-d]
+name = "ABC073: D - joisino's travel"
+url = "https://atcoder.jp/contests/abc073/tasks/abc073_d"
+matching = "Words"
+meta = { using = ["itertools", "petgraph"] }
+
 [examples.abc084-d]
 name = "ABC084: D - 2017-like Number"
 url = "https://atcoder.jp/contests/abc084/tasks/abc084_d"

From f204639b4bfdabfc94c8d2e115c44875f2be2fb5 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Thu, 16 Jan 2020 00:37:43 +0900
Subject: [PATCH 33/39] Modify `abc151-d`

---
 examples/abc151-d.rs          | 57 +++++++++++++++++------------------
 test-with-generated-opts.toml |  2 +-
 2 files changed, 29 insertions(+), 30 deletions(-)

diff --git a/examples/abc151-d.rs b/examples/abc151-d.rs
index 9a0c36b..4333a07 100644
--- a/examples/abc151-d.rs
+++ b/examples/abc151-d.rs
@@ -1,11 +1,10 @@
 // https://atcoder.jp/contests/abc151/tasks/abc151_d
 
 use ndarray::Array;
-use smallvec::{smallvec, SmallVec};
+use smallvec::SmallVec;
 
-use std::collections::VecDeque;
 use std::io::{self, Read};
-use std::iter;
+use std::{iter, mem};
 
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
@@ -17,28 +16,28 @@ fn main() {
         ({ Maze<$c:literal, ($h:expr, $w:expr)> }) => {
             Array::from_shape_vec(
                 ($h, $w),
-                (0..$h)
-                    .fold(vec![], |mut acc, _| {
-                        acc.extend(input.next().unwrap().bytes().map(|c| c == $c));
-                        acc
-                    }),
+                itertools::concat((0..$h).map(|_| read!({ Row<$c> }))),
             )
             .unwrap()
         };
+        ({ Row<$c:literal> }) => {
+            read!({ Bytes }).into_iter().map(|c| c == $c).collect::<Vec<_>>()
+        };
+        ({ Bytes }) => {
+            read!(String).into_bytes()
+        };
     }
 
     let (h, w) = read!((usize, usize));
     let maze = read!({ Maze<b'.', (h, w)> });
 
-    let neighbors = Array::from_shape_fn((h, w), |(i, j)| -> SmallVec<[_; 4]> {
-        let mut neighbors = smallvec![];
-        macro_rules! push {
-            (if $cond:expr => $pos:expr) => {
-                if $cond && maze[$pos] {
-                    neighbors.push($pos);
-                }
-            };
-        }
+    let neighbors = Array::from_shape_fn((h, w), |(i, j)| {
+        let mut neighbors = SmallVec::<[_; 4]>::new();
+        macro_rules! push((if $cond:expr => $pos:expr) => {
+            if $cond && maze[$pos] {
+                neighbors.push($pos);
+            }
+        });
         push!(if 0 < i     => (i - 1, j));
         push!(if i < h - 1 => (i + 1, j));
         push!(if 0 < j     => (i, j - 1));
@@ -50,21 +49,21 @@ fn main() {
         .flat_map(|i| (0..w).map(move |j| (i, j)))
         .filter(|&p| maze[p])
         .map(|start| {
-            let mut longest = 0;
-            let mut queue = iter::once((start, 0)).collect::<VecDeque<_>>();
+            let mut queue = vec![start];
             let mut unvisited = maze.clone();
             unvisited[start] = false;
 
-            while let Some((pos, dist)) = queue.pop_front() {
-                for &neighbor in &neighbors[pos] {
-                    if unvisited[neighbor] {
-                        unvisited[neighbor] = false;
-                        longest = dist + 1;
-                        queue.push_back((neighbor, longest));
-                    }
-                }
-            }
-            longest
+            iter::repeat(())
+                .take_while(|_| {
+                    queue = queue
+                        .iter()
+                        .flat_map(|&p| &neighbors[p])
+                        .copied()
+                        .filter(|&p| mem::replace(&mut unvisited[p], false))
+                        .collect();
+                    !queue.is_empty()
+                })
+                .count()
         })
         .max()
         .unwrap();
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 7b36baf..4b7cab1 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -139,7 +139,7 @@ meta = { using = ["itertools", "num"] }
 name = "ABC151: D - Maze Master"
 url = "https://atcoder.jp/contests/abc151/tasks/abc151_d"
 matching = "Words"
-meta = { using = ["ndarray", "smallvec"] }
+meta = { using = ["itertools", "ndarray", "smallvec"] }
 
 [examples.apg4b-a]
 name = "APG4b: A - 1.00.はじめに"

From 65632fe879e37f3d0eadb6be21ebacab43f1bc0f Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 17 Jan 2020 00:25:41 +0900
Subject: [PATCH 34/39] Add examples for practice-B

---
 examples/practice-b-naive.rs     | 108 +++++++++++++++++++++++++++++++
 examples/practice-b-proconio.rs  | 107 ++++++++++++++++++++++++++++++
 examples/practice-b-text-io.rs   | 106 ++++++++++++++++++++++++++++++
 examples/practice-b-whiteread.rs |  96 +++++++++++++++++++++++++++
 test-with-generated-opts.toml    |  20 ++++++
 5 files changed, 437 insertions(+)
 create mode 100644 examples/practice-b-naive.rs
 create mode 100644 examples/practice-b-proconio.rs
 create mode 100644 examples/practice-b-text-io.rs
 create mode 100644 examples/practice-b-whiteread.rs

diff --git a/examples/practice-b-naive.rs b/examples/practice-b-naive.rs
new file mode 100644
index 0000000..2723533
--- /dev/null
+++ b/examples/practice-b-naive.rs
@@ -0,0 +1,108 @@
+// https://atcoder.jp/contests/practice/tasks/practice_2
+
+use maplit::hashset;
+
+use std::io;
+
+fn main() {
+    fn read_line() -> String {
+        let mut input = "".to_owned();
+        io::stdin().read_line(&mut input).unwrap();
+        input
+    }
+
+    fn query(l: u8, r: u8) -> bool {
+        println!("? {} {}", l as char, r as char);
+        read_line() == "<\n"
+    }
+
+    let n = {
+        let input = read_line();
+        let mut input = input.split_whitespace();
+        macro_rules! read(($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap()));
+        read!(u32)
+    };
+
+    let ans = match n {
+        26 => on_26(query),
+        5 => on_5(query),
+        _ => unreachable!(),
+    };
+    println!("! {}", String::from_utf8(ans).unwrap());
+}
+
+fn on_26(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    (b'B'..=b'Z').fold(vec![b'A'], |balls, ball| insort(balls, ball, &mut query))
+}
+
+#[allow(clippy::many_single_char_names)]
+fn on_5(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    let (r, s, t, u) = {
+        let (q1, q2) = (query(b'A', b'B'), query(b'C', b'D'));
+        let (light1, heavy1) = if q1 { (b'A', b'B') } else { (b'B', b'A') };
+        let (light2, heavy2) = if q2 { (b'C', b'D') } else { (b'D', b'C') };
+        let q3 = query(light1, light2);
+        if q3 {
+            (light1, heavy1, light2, heavy2)
+        } else {
+            (light2, heavy2, light1, heavy1)
+        }
+    };
+
+    let v = (&hashset!(b'A', b'B', b'C', b'D', b'E') - &hashset!(r, s, t, u))
+        .into_iter()
+        .next()
+        .unwrap();
+
+    let q4 = query(t, v);
+    if q4 {
+        let q5 = query(u, v);
+        let (min_uv, max_uv) = if q5 { (u, v) } else { (v, u) };
+        itertools::chain(vec![r], insort(vec![t, min_uv, max_uv], s, &mut query)).collect()
+    } else {
+        let q5 = query(r, v);
+        if q5 {
+            itertools::chain(vec![r], insort(vec![v, t, u], s, &mut query)).collect()
+        } else {
+            itertools::chain(vec![v, r], insort(vec![t, u], s, &mut query)).collect()
+        }
+    }
+}
+
+fn insort(mut balls: Vec<u8>, ball: u8, mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    let (mut min, mut max) = (0, balls.len());
+    while min < max {
+        let mid = (min + max) / 2;
+        if query(balls[mid], ball) {
+            min = mid + 1;
+        } else {
+            max = mid
+        };
+    }
+    balls.insert(min, ball);
+    balls
+}
+
+#[cfg(test)]
+mod tests {
+    use itertools::Itertools as _;
+
+    use std::str;
+
+    #[test]
+    fn on_5() {
+        for balls in (b'A'..=b'E').permutations(5) {
+            let mut queries = 0;
+            let ans = super::on_5(|l, r| {
+                queries += 1;
+                let wl = balls.iter().position(|&b| b == l).unwrap();
+                let wr = balls.iter().position(|&b| b == r).unwrap();
+                wl < wr
+            });
+            let ans = str::from_utf8(&ans).unwrap();
+            let balls = str::from_utf8(&balls).unwrap();
+            assert_eq!(ans, balls);
+            assert!(queries <= 7);
+        }
+    }
+}
diff --git a/examples/practice-b-proconio.rs b/examples/practice-b-proconio.rs
new file mode 100644
index 0000000..2735590
--- /dev/null
+++ b/examples/practice-b-proconio.rs
@@ -0,0 +1,107 @@
+// https://atcoder.jp/contests/practice/tasks/practice_2
+
+use maplit::hashset;
+use proconio::input;
+use proconio::source::line::LineSource;
+
+use std::io;
+
+fn main() {
+    let stdin = io::stdin();
+    let mut stdin = stdin.lock();
+
+    input! {
+        from LineSource::new(&mut stdin),
+        n: u32,
+    }
+
+    let query = |l: u8, r: u8| -> _ {
+        println!("? {} {}", l as char, r as char);
+        input! {
+            from LineSource::new(&mut stdin),
+            c: char,
+        }
+        c == '<'
+    };
+
+    let ans = match n {
+        26 => on_26(query),
+        5 => on_5(query),
+        _ => unreachable!(),
+    };
+    println!("! {}", String::from_utf8(ans).unwrap());
+}
+
+fn on_26(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    (b'B'..=b'Z').fold(vec![b'A'], |balls, ball| insort(balls, ball, &mut query))
+}
+
+#[allow(clippy::many_single_char_names)]
+fn on_5(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    let (r, s, t, u) = {
+        let (q1, q2) = (query(b'A', b'B'), query(b'C', b'D'));
+        let (light1, heavy1) = if q1 { (b'A', b'B') } else { (b'B', b'A') };
+        let (light2, heavy2) = if q2 { (b'C', b'D') } else { (b'D', b'C') };
+        let q3 = query(light1, light2);
+        if q3 {
+            (light1, heavy1, light2, heavy2)
+        } else {
+            (light2, heavy2, light1, heavy1)
+        }
+    };
+
+    let v = (&hashset!(b'A', b'B', b'C', b'D', b'E') - &hashset!(r, s, t, u))
+        .into_iter()
+        .next()
+        .unwrap();
+
+    let q4 = query(t, v);
+    if q4 {
+        let q5 = query(u, v);
+        let (min_uv, max_uv) = if q5 { (u, v) } else { (v, u) };
+        itertools::chain(vec![r], insort(vec![t, min_uv, max_uv], s, &mut query)).collect()
+    } else {
+        let q5 = query(r, v);
+        if q5 {
+            itertools::chain(vec![r], insort(vec![v, t, u], s, &mut query)).collect()
+        } else {
+            itertools::chain(vec![v, r], insort(vec![t, u], s, &mut query)).collect()
+        }
+    }
+}
+
+fn insort(mut balls: Vec<u8>, ball: u8, mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    let (mut min, mut max) = (0, balls.len());
+    while min < max {
+        let mid = (min + max) / 2;
+        if query(balls[mid], ball) {
+            min = mid + 1;
+        } else {
+            max = mid
+        };
+    }
+    balls.insert(min, ball);
+    balls
+}
+
+#[cfg(test)]
+mod tests {
+    use itertools::Itertools as _;
+
+    use std::str;
+
+    #[test]
+    fn on_5() {
+        for balls in (b'A'..=b'E').permutations(5) {
+            let mut queries = 0;
+            let ans = super::on_5(|l, r| {
+                queries += 1;
+                let wl = balls.iter().position(|&b| b == l).unwrap();
+                let wr = balls.iter().position(|&b| b == r).unwrap();
+                wl < wr
+            });
+            assert_eq!(ans, balls);
+            assert!(queries <= 7);
+        }
+    }
+}
diff --git a/examples/practice-b-text-io.rs b/examples/practice-b-text-io.rs
new file mode 100644
index 0000000..2774aa8
--- /dev/null
+++ b/examples/practice-b-text-io.rs
@@ -0,0 +1,106 @@
+// https://atcoder.jp/contests/practice/tasks/practice_2
+
+use maplit::hashset;
+use text_io::{read, try_read, try_scan};
+
+use std::io;
+
+#[allow(clippy::try_err)]
+fn main() {
+    fn read_line() -> String {
+        let mut input = "".to_owned();
+        io::stdin().read_line(&mut input).unwrap();
+        input
+    }
+
+    let n: u32 = {
+        let line = read_line();
+        read!("{}", line.bytes())
+    };
+
+    let query = |l: u8, r: u8| -> _ {
+        println!("? {} {}", l as char, r as char);
+        read_line() == "<\n"
+    };
+
+    let ans = match n {
+        26 => on_26(query),
+        5 => on_5(query),
+        _ => unreachable!(),
+    };
+    println!("! {}", String::from_utf8(ans).unwrap());
+}
+
+fn on_26(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    (b'B'..=b'Z').fold(vec![b'A'], |balls, ball| insort(balls, ball, &mut query))
+}
+
+#[allow(clippy::many_single_char_names)]
+fn on_5(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    let (r, s, t, u) = {
+        let (q1, q2) = (query(b'A', b'B'), query(b'C', b'D'));
+        let (light1, heavy1) = if q1 { (b'A', b'B') } else { (b'B', b'A') };
+        let (light2, heavy2) = if q2 { (b'C', b'D') } else { (b'D', b'C') };
+        let q3 = query(light1, light2);
+        if q3 {
+            (light1, heavy1, light2, heavy2)
+        } else {
+            (light2, heavy2, light1, heavy1)
+        }
+    };
+
+    let v = (&hashset!(b'A', b'B', b'C', b'D', b'E') - &hashset!(r, s, t, u))
+        .into_iter()
+        .next()
+        .unwrap();
+
+    let q4 = query(t, v);
+    if q4 {
+        let q5 = query(u, v);
+        let (min_uv, max_uv) = if q5 { (u, v) } else { (v, u) };
+        itertools::chain(vec![r], insort(vec![t, min_uv, max_uv], s, &mut query)).collect()
+    } else {
+        let q5 = query(r, v);
+        if q5 {
+            itertools::chain(vec![r], insort(vec![v, t, u], s, &mut query)).collect()
+        } else {
+            itertools::chain(vec![v, r], insort(vec![t, u], s, &mut query)).collect()
+        }
+    }
+}
+
+fn insort(mut balls: Vec<u8>, ball: u8, mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    let (mut min, mut max) = (0, balls.len());
+    while min < max {
+        let mid = (min + max) / 2;
+        if query(balls[mid], ball) {
+            min = mid + 1;
+        } else {
+            max = mid
+        };
+    }
+    balls.insert(min, ball);
+    balls
+}
+
+#[cfg(test)]
+mod tests {
+    use itertools::Itertools as _;
+
+    use std::str;
+
+    #[test]
+    fn on_5() {
+        for balls in (b'A'..=b'E').permutations(5) {
+            let mut queries = 0;
+            let ans = super::on_5(|l, r| {
+                queries += 1;
+                let wl = balls.iter().position(|&b| b == l).unwrap();
+                let wr = balls.iter().position(|&b| b == r).unwrap();
+                wl < wr
+            });
+            assert_eq!(ans, balls);
+            assert!(queries <= 7);
+        }
+    }
+}
diff --git a/examples/practice-b-whiteread.rs b/examples/practice-b-whiteread.rs
new file mode 100644
index 0000000..aacfd6f
--- /dev/null
+++ b/examples/practice-b-whiteread.rs
@@ -0,0 +1,96 @@
+// https://atcoder.jp/contests/practice/tasks/practice_2
+
+use maplit::hashset;
+use whiteread::Reader;
+
+fn main() {
+    let mut rdr = Reader::from_stdin_naive();
+
+    let (n, _) = rdr.line::<(u32, u32)>().unwrap();
+
+    let query = |l: u8, r: u8| -> _ {
+        println!("? {} {}", l as char, r as char);
+        rdr.p::<char>() == '<'
+    };
+
+    let ans = match n {
+        26 => on_26(query),
+        5 => on_5(query),
+        _ => unreachable!(),
+    };
+    println!("! {}", String::from_utf8(ans).unwrap());
+}
+
+fn on_26(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    (b'B'..=b'Z').fold(vec![b'A'], |balls, ball| insort(balls, ball, &mut query))
+}
+
+#[allow(clippy::many_single_char_names)]
+fn on_5(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    let (r, s, t, u) = {
+        let (q1, q2) = (query(b'A', b'B'), query(b'C', b'D'));
+        let (light1, heavy1) = if q1 { (b'A', b'B') } else { (b'B', b'A') };
+        let (light2, heavy2) = if q2 { (b'C', b'D') } else { (b'D', b'C') };
+        let q3 = query(light1, light2);
+        if q3 {
+            (light1, heavy1, light2, heavy2)
+        } else {
+            (light2, heavy2, light1, heavy1)
+        }
+    };
+
+    let v = (&hashset!(b'A', b'B', b'C', b'D', b'E') - &hashset!(r, s, t, u))
+        .into_iter()
+        .next()
+        .unwrap();
+
+    let q4 = query(t, v);
+    if q4 {
+        let q5 = query(u, v);
+        let (min_uv, max_uv) = if q5 { (u, v) } else { (v, u) };
+        itertools::chain(vec![r], insort(vec![t, min_uv, max_uv], s, &mut query)).collect()
+    } else {
+        let q5 = query(r, v);
+        if q5 {
+            itertools::chain(vec![r], insort(vec![v, t, u], s, &mut query)).collect()
+        } else {
+            itertools::chain(vec![v, r], insort(vec![t, u], s, &mut query)).collect()
+        }
+    }
+}
+
+fn insort(mut balls: Vec<u8>, ball: u8, mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
+    let (mut min, mut max) = (0, balls.len());
+    while min < max {
+        let mid = (min + max) / 2;
+        if query(balls[mid], ball) {
+            min = mid + 1;
+        } else {
+            max = mid
+        };
+    }
+    balls.insert(min, ball);
+    balls
+}
+
+#[cfg(test)]
+mod tests {
+    use itertools::Itertools as _;
+
+    use std::str;
+
+    #[test]
+    fn on_5() {
+        for balls in (b'A'..=b'E').permutations(5) {
+            let mut queries = 0;
+            let ans = super::on_5(|l, r| {
+                queries += 1;
+                let wl = balls.iter().position(|&b| b == l).unwrap();
+                let wr = balls.iter().position(|&b| b == r).unwrap();
+                wl < wr
+            });
+            assert_eq!(ans, balls);
+            assert!(queries <= 7);
+        }
+    }
+}
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 4b7cab1..4c0085c 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -212,6 +212,26 @@ matching = "Exact"
 alt_testcases = [{ in = "1\n2 3\ntest", out = "6 test\n" }, { in = "72\n128 256\nmyonmyon", out = "456 myonmyon\n" }]
 meta = { using = ["whiteread"] }
 
+# [examples.practice-b-naive]
+# name = "practice contest: B - Interactive Sorting"
+# url = "https://atcoder.jp/contests/practice/tasks/practice_2"
+# meta = { using = ["itertools"] }
+#
+# [examples.practice-b-proconio]
+# name = "practice contest: B - Interactive Sorting"
+# url = "https://atcoder.jp/contests/practice/tasks/practice_2"
+# meta = { using = ["itertools", "proconio"] }
+#
+# [examples.practice-b-text-io]
+# name = "practice contest: B - Interactive Sorting"
+# url = "https://atcoder.jp/contests/practice/tasks/practice_2"
+# meta = { using = ["itertools", "text-io"] }
+#
+# [examples.practice-b-whiteread]
+# name = "practice contest: B - Interactive Sorting"
+# url = "https://atcoder.jp/contests/practice/tasks/practice_2"
+# meta = { using = ["itertools", "whiteread"] }
+
 [examples.sumitrust2019-c]
 name = "Sumitomo Mitsui Trust Bank Programming Contest 2019: C - 100 to 105"
 url = "https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c"

From f157fc711ad457aeacffe68859c003d2e6bb609c Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 17 Jan 2020 01:41:31 +0900
Subject: [PATCH 35/39] Test `practice-b-*`

---
 .github/workflows/ci.yml                   |   5 +
 examples/practice-b-naive.rs               |   4 +-
 examples/practice-b-proconio.rs            |   6 +-
 examples/practice-b-text-io.rs             |   6 +-
 examples/practice-b-whiteread.rs           |   6 +-
 examples/testers/practice-b.py             |  58 ++++++
 test-with-generated-opts.toml              |  85 ++++++---
 tools/test-with-generated-opts/Cargo.toml  |  19 +-
 tools/test-with-generated-opts/src/main.rs | 207 +++++++++++++++------
 9 files changed, 305 insertions(+), 91 deletions(-)
 create mode 100644 examples/testers/practice-b.py

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1a5878a..077dcd0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -57,6 +57,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v1
 
+      - name: setup-python
+        uses: actions/setup-python@v1
+        with:
+          python-version: '3.8'
+
       - name: rust-toolchain
         uses: actions-rs/toolchain@v1
         with:
diff --git a/examples/practice-b-naive.rs b/examples/practice-b-naive.rs
index 2723533..e937181 100644
--- a/examples/practice-b-naive.rs
+++ b/examples/practice-b-naive.rs
@@ -2,7 +2,7 @@
 
 use maplit::hashset;
 
-use std::io;
+use std::{io, str};
 
 fn main() {
     fn read_line() -> String {
@@ -28,7 +28,7 @@ fn main() {
         5 => on_5(query),
         _ => unreachable!(),
     };
-    println!("! {}", String::from_utf8(ans).unwrap());
+    println!("! {}", str::from_utf8(&ans).unwrap());
 }
 
 fn on_26(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
diff --git a/examples/practice-b-proconio.rs b/examples/practice-b-proconio.rs
index 2735590..47f2d9b 100644
--- a/examples/practice-b-proconio.rs
+++ b/examples/practice-b-proconio.rs
@@ -4,7 +4,7 @@ use maplit::hashset;
 use proconio::input;
 use proconio::source::line::LineSource;
 
-use std::io;
+use std::{io, str};
 
 fn main() {
     let stdin = io::stdin();
@@ -29,7 +29,7 @@ fn main() {
         5 => on_5(query),
         _ => unreachable!(),
     };
-    println!("! {}", String::from_utf8(ans).unwrap());
+    println!("! {}", str::from_utf8(&ans).unwrap());
 }
 
 fn on_26(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
@@ -100,6 +100,8 @@ mod tests {
                 let wr = balls.iter().position(|&b| b == r).unwrap();
                 wl < wr
             });
+            let ans = str::from_utf8(&ans).unwrap();
+            let balls = str::from_utf8(&balls).unwrap();
             assert_eq!(ans, balls);
             assert!(queries <= 7);
         }
diff --git a/examples/practice-b-text-io.rs b/examples/practice-b-text-io.rs
index 2774aa8..df3960e 100644
--- a/examples/practice-b-text-io.rs
+++ b/examples/practice-b-text-io.rs
@@ -3,7 +3,7 @@
 use maplit::hashset;
 use text_io::{read, try_read, try_scan};
 
-use std::io;
+use std::{io, str};
 
 #[allow(clippy::try_err)]
 fn main() {
@@ -28,7 +28,7 @@ fn main() {
         5 => on_5(query),
         _ => unreachable!(),
     };
-    println!("! {}", String::from_utf8(ans).unwrap());
+    println!("! {}", str::from_utf8(&ans).unwrap());
 }
 
 fn on_26(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
@@ -99,6 +99,8 @@ mod tests {
                 let wr = balls.iter().position(|&b| b == r).unwrap();
                 wl < wr
             });
+            let ans = str::from_utf8(&ans).unwrap();
+            let balls = str::from_utf8(&balls).unwrap();
             assert_eq!(ans, balls);
             assert!(queries <= 7);
         }
diff --git a/examples/practice-b-whiteread.rs b/examples/practice-b-whiteread.rs
index aacfd6f..0f93295 100644
--- a/examples/practice-b-whiteread.rs
+++ b/examples/practice-b-whiteread.rs
@@ -3,6 +3,8 @@
 use maplit::hashset;
 use whiteread::Reader;
 
+use std::str;
+
 fn main() {
     let mut rdr = Reader::from_stdin_naive();
 
@@ -18,7 +20,7 @@ fn main() {
         5 => on_5(query),
         _ => unreachable!(),
     };
-    println!("! {}", String::from_utf8(ans).unwrap());
+    println!("! {}", str::from_utf8(&ans).unwrap());
 }
 
 fn on_26(mut query: impl FnMut(u8, u8) -> bool) -> Vec<u8> {
@@ -89,6 +91,8 @@ mod tests {
                 let wr = balls.iter().position(|&b| b == r).unwrap();
                 wl < wr
             });
+            let ans = str::from_utf8(&ans).unwrap();
+            let balls = str::from_utf8(&balls).unwrap();
             assert_eq!(ans, balls);
             assert!(queries <= 7);
         }
diff --git a/examples/testers/practice-b.py b/examples/testers/practice-b.py
new file mode 100644
index 0000000..00a5ffb
--- /dev/null
+++ b/examples/testers/practice-b.py
@@ -0,0 +1,58 @@
+import itertools
+import random
+import string
+from argparse import ArgumentParser
+from subprocess import Popen, PIPE
+from typing import List
+
+
+def main() -> None:
+    parser = ArgumentParser()
+    parser.add_argument('bin')
+
+    binary = parser.parse_args().bin
+
+    for _ in range(100):
+        judge(binary, ''.join(random.sample(string.ascii_uppercase, 26)))
+
+    for balls in itertools.permutations(string.ascii_uppercase[:5]):
+        judge(binary, ''.join(balls))
+
+
+def judge(binary: str, balls: str) -> None:
+    n = len(balls)
+    q = 7 if n == 5 else 100
+
+    with Popen([binary], stdin=PIPE, stdout=PIPE) as proc:
+        def read_words() -> List[str]:
+            return proc.stdout.readline().decode('utf-8').split()
+
+        def on_query(c1: str, c2: str) -> None:
+            reply = '<' if balls.index(c1) < balls.index(c2) else '>'
+            proc.stdin.write(f'{reply}\n'.encode('utf-8'))
+            proc.stdin.flush()
+
+        def on_answer(ans: str) -> None:
+            if ans != balls:
+                raise Exception('wrong answer')
+
+        proc.stdin.write(f'{n} {q}\n'.encode('utf-8'))
+        proc.stdin.flush()
+
+        for _ in range(q):
+            words = read_words()
+            if len(words) == 3 and words[0] == '?':
+                on_query(words[1], words[2])
+            elif len(words) == 2 and words[0] == '!':
+                return on_answer(words[1])
+            else:
+                raise Exception('invalid')
+        else:
+            words = read_words()
+            if len(words) == 2 and words[0] == '!':
+                return on_answer(words[1])
+            raise Exception('answer me')
+
+
+if __name__ == '__main__':
+    main()
diff --git a/test-with-generated-opts.toml b/test-with-generated-opts.toml
index 4c0085c..7d0d572 100644
--- a/test-with-generated-opts.toml
+++ b/test-with-generated-opts.toml
@@ -1,147 +1,171 @@
 # Dropboxからのダウンロードは行なわない。（面倒なのと誰のアカウントを使うかという問題がある）
 
-bin = "./target/test-with-generated-opts/bin/{}"
-testcases = "./target/test-with-generated-opts/testcases/{}"
+bin = "./target/test-with-generated-opts/bin/{problem}"
+testcases = "./target/test-with-generated-opts/testcases/{problem}"
 
 [examples.abc054-c]
+type = "Normal"
 name = "ABC054: C - One-stroke Path"
 url = "https://atcoder.jp/contests/abc054/tasks/abc054_c"
 matching = "Words"
 meta = { using = ["itertools", "petgraph"] }
 
 [examples.abc057-b-naive]
+type = "Normal"
 name = "ABC057: B - Checkpoints"
 url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
 matching = "Words"
 meta = { using = [] } # 下3つと比較するため
 
 [examples.abc057-b-proconio]
+type = "Normal"
 name = "ABC057: B - Checkpoints"
 url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
 matching = "Words"
 meta = { using = ["proconio"] }
 
 [examples.abc057-b-text-io]
+type = "Normal"
 name = "ABC057: B - Checkpoints"
 url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
 matching = "Words"
 meta = { using = ["text_io"] }
 
 [examples.abc057-b-whiteread]
+type = "Normal"
 name = "ABC057: B - Checkpoints"
 url = "https://atcoder.jp/contests/abc057/tasks/abc057_b"
 matching = "Words"
 meta = { using = ["whiteread"] }
 
 [examples.abc073-d]
+type = "Normal"
 name = "ABC073: D - joisino's travel"
 url = "https://atcoder.jp/contests/abc073/tasks/abc073_d"
 matching = "Words"
 meta = { using = ["itertools", "petgraph"] }
 
 [examples.abc084-d]
+type = "Normal"
 name = "ABC084: D - 2017-like Number"
 url = "https://atcoder.jp/contests/abc084/tasks/abc084_d"
 matching = "Words"
 meta = { using = ["itertools-num", "primal"] }
 
 [examples.abc118-b-naive]
+type = "Normal"
 name = "ABC118: B - Foods Loved by Everyone"
 url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
 matching = "Words"
 meta = { using = [] } # 下3つと比較するため
 
 [examples.abc118-b-proconio]
+type = "Normal"
 name = "ABC118: B - Foods Loved by Everyone"
 url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
 matching = "Words"
 meta = { using = ["proconio"] }
 
 [examples.abc118-b-text-io]
+type = "Normal"
 name = "ABC118: B - Foods Loved by Everyone"
 url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
 matching = "Words"
 meta = { using = ["text-io"] }
 
 [examples.abc118-b-whiteread]
+type = "Normal"
 name = "ABC118: B - Foods Loved by Everyone"
 url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
 matching = "Words"
 meta = { using = ["whiteread"] }
 
 [examples.abc120-d]
+type = "Normal"
 name = "ABC120: D - Decayed Bridges"
 url = "https://atcoder.jp/contests/abc120/tasks/abc120_d"
 matching = "Words"
 meta = { using = ["union-find"] }
 
 [examples.abc121-b-naive]
+type = "Normal"
 name = "ABC121: B - Can you solve this?"
 url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
 matching = "Words"
 meta = { using = [] } # 下3つと比較するため
 
 [examples.abc121-b-proconio]
+type = "Normal"
 name = "ABC121: B - Can you solve this?"
 url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
 matching = "Words"
 meta = { using = ["proconio"] }
 
 [examples.abc121-b-text-io]
+type = "Normal"
 name = "ABC121: B - Can you solve this?"
 url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
 matching = "Words"
 meta = { using = ["text_io"] }
 
 [examples.abc121-b-whiteread]
+type = "Normal"
 name = "ABC121: B - Can you solve this?"
 url = "https://atcoder.jp/contests/abc121/tasks/abc121_b"
 matching = "Words"
 meta = { using = ["whiteread"] }
 
 [examples.abc129-f]
+type = "Normal"
 name = "ABC129: F - Takahashi's Basics in Education and Learning"
 url = "https://atcoder.jp/contests/abc129/tasks/abc129_f"
 matching = "Words"
 meta = { using = ["derive_more", "ndarray", "num", "num-derive"] }
 
 [examples.abc141-c]
+type = "Normal"
 name = "ABC141: C - Attack Survival"
 url = "https://atcoder.jp/contests/abc141/tasks/abc141_c"
 matching = "Words"
 meta = { using = ["proconio"] }
 
 [examples.abc142-c]
+type = "Normal"
 name = "ABC142: C - Go to School"
 url = "https://atcoder.jp/contests/abc142/tasks/abc142_c"
 matching = "Words"
 meta = { using = ["itertools", "superslice"] }
 
 [examples.abc142-d]
+type = "Normal"
 name = "ABC142: D - Disjoint Set of Common Divisors"
 url = "https://atcoder.jp/contests/abc142/tasks/abc142_d"
 matching = "Words"
 meta = { using = ["num-integer", "primal"] }
 
 [examples.abc144-d]
+type = "Normal"
 name = "ABC144: D - Water Bottle"
 url = "https://atcoder.jp/contests/abc144/tasks/abc144_d"
 matching = { FloatOr = { abs = 1e-6, rel = 1e-6 } }
 meta = { using = ["libm"] }
 
 [examples.abc150-d]
+type = "Normal"
 name = "ABC150: D - Semi Common Multiple"
 url = "https://atcoder.jp/contests/abc150/tasks/abc150_d"
 matching = "Words"
 meta = { using = ["itertools", "num"] }
 
 [examples.abc151-d]
+type = "Normal"
 name = "ABC151: D - Maze Master"
 url = "https://atcoder.jp/contests/abc151/tasks/abc151_d"
 matching = "Words"
 meta = { using = ["itertools", "ndarray", "smallvec"] }
 
 [examples.apg4b-a]
+type = "Normal"
 name = "APG4b: A - 1.00.はじめに"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_a"
 matching = "Exact"
@@ -149,42 +173,49 @@ alt_testcases = [{ in = "", out = "Hello, world!\n" }]
 meta = { using = ["aho-corasick", "alga", "approx", "ascii", "bitset-fixed", "defmac", "derive_more", "derive-new", "either", "euclid", "fixedbitset", "getrandom", "jemallocator", "jemalloc-ctl", "if_chain", "im-rc", "indexmap", "itertools", "itertools-num", "lazy_static", "libm", "maplit", "matches", "modtype", "nalgebra", "ndarray", "nom", "num", "num-bigint", "num-complex", "num-derive", "num-integer", "num-iter", "num-rational", "num-traits", "ordered-float", "permutohedron", "petgraph", "primal", "primal-check", "primal-estimate", "primal-sieve", "proconio", "rand", "rand_chacha", "rand_core", "rand_distr", "rand_hc", "rand_pcg", "regex", "rustc-hash", "smallvec", "strsim", "superslice", "take_mut", "text_io", "union-find", "whiteread"] }
 
 [examples.apg4b-ex25]
+type = "Normal"
 name = "APG4b: EX25 - 集合の操作 / 3.05"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_bx"
 matching = "Words"
 meta = { using = ["fixedbitset", "itertools"] }
 
 [examples.apg4b-ex26]
+type = "Normal"
 name = "APG4b: EX26 - 電卓を作ろう3 / 3.06"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_bw"
 matching = "Exact"
 meta = { using = ["itertools", "maplit", "matches", "nom"] }
 
 [examples.arc065-c]
+type = "Normal"
 name = "ABC049 / ARC065: C - 白昼夢 / Daydream"
 url = "https://atcoder.jp/contests/arc065/tasks/arc065_a"
 matching = "Words"
 meta = { using = ["lazy_static", "regex"] }
 
 [examples.arc084-c]
+type = "Normal"
 name = "ABC077 / ARC084: C - Snuke Festival"
 url = "https://atcoder.jp/contests/arc084/tasks/arc084_a"
 matching = "Words"
 meta = { using = ["superslice"] }
 
 [examples.atc001-b]
+type = "Normal"
 name = "ATC001: B - Union Find"
 url = "https://atcoder.jp/contests/atc001/tasks/unionfind_a"
 matching = "Words"
 meta = { using = ["petgraph"] }
 
 [examples.atc002-b]
+type = "Normal"
 name = "ATC002: B - n^p mod m"
 url = "https://atcoder.jp/contests/atc002/tasks/atc002_b"
 matching = "Words"
 meta = { using = ["num"] }
 
 [examples.practice-a-naive]
+type = "Normal"
 name = "practice contest: A - Welcome to AtCoder"
 url = "https://atcoder.jp/contests/practice/tasks/practice_1"
 matching = "Exact"
@@ -192,6 +223,7 @@ alt_testcases = [{ in = "1\n2 3\ntest", out = "6 test\n" }, { in = "72\n128 256\
 meta = { using = [] } # 下3つと比較するため
 
 [examples.practice-a-proconio]
+type = "Normal"
 name = "practice contest: A - Welcome to AtCoder"
 url = "https://atcoder.jp/contests/practice/tasks/practice_1"
 matching = "Exact"
@@ -199,6 +231,7 @@ alt_testcases = [{ in = "1\n2 3\ntest", out = "6 test\n" }, { in = "72\n128 256\
 meta = { using = ["proconio"] }
 
 [examples.practice-a-text-io]
+type = "Normal"
 name = "practice contest: A - Welcome to AtCoder"
 url = "https://atcoder.jp/contests/practice/tasks/practice_1"
 matching = "Exact"
@@ -206,33 +239,43 @@ alt_testcases = [{ in = "1\n2 3\ntest", out = "6 test\n" }, { in = "72\n128 256\
 meta = { using = ["text-io"] }
 
 [examples.practice-a-whiteread]
+type = "Normal"
 name = "practice contest: A - Welcome to AtCoder"
 url = "https://atcoder.jp/contests/practice/tasks/practice_1"
 matching = "Exact"
 alt_testcases = [{ in = "1\n2 3\ntest", out = "6 test\n" }, { in = "72\n128 256\nmyonmyon", out = "456 myonmyon\n" }]
 meta = { using = ["whiteread"] }
 
-# [examples.practice-b-naive]
-# name = "practice contest: B - Interactive Sorting"
-# url = "https://atcoder.jp/contests/practice/tasks/practice_2"
-# meta = { using = ["itertools"] }
-#
-# [examples.practice-b-proconio]
-# name = "practice contest: B - Interactive Sorting"
-# url = "https://atcoder.jp/contests/practice/tasks/practice_2"
-# meta = { using = ["itertools", "proconio"] }
-#
-# [examples.practice-b-text-io]
-# name = "practice contest: B - Interactive Sorting"
-# url = "https://atcoder.jp/contests/practice/tasks/practice_2"
-# meta = { using = ["itertools", "text-io"] }
-#
-# [examples.practice-b-whiteread]
-# name = "practice contest: B - Interactive Sorting"
-# url = "https://atcoder.jp/contests/practice/tasks/practice_2"
-# meta = { using = ["itertools", "whiteread"] }
+[examples.practice-b-naive]
+type = "Special"
+name = "practice contest: B - Interactive Sorting"
+url = "https://atcoder.jp/contests/practice/tasks/practice_2"
+tester = ["python", "./examples/testers/practice-b.py", "{bin}"]
+meta = { using = ["itertools", "maplit"] }
+
+[examples.practice-b-proconio]
+type = "Special"
+name = "practice contest: B - Interactive Sorting"
+url = "https://atcoder.jp/contests/practice/tasks/practice_2"
+tester = ["python", "./examples/testers/practice-b.py", "{bin}"]
+meta = { using = ["itertools", "maplit", "proconio"] }
+
+[examples.practice-b-text-io]
+type = "Special"
+name = "practice contest: B - Interactive Sorting"
+url = "https://atcoder.jp/contests/practice/tasks/practice_2"
+tester = ["python", "./examples/testers/practice-b.py", "{bin}"]
+meta = { using = ["itertools", "maplit", "text-io"] }
+
+[examples.practice-b-whiteread]
+type = "Special"
+name = "practice contest: B - Interactive Sorting"
+url = "https://atcoder.jp/contests/practice/tasks/practice_2"
+tester = ["python", "./examples/testers/practice-b.py", "{bin}"]
+meta = { using = ["itertools", "maplit", "whiteread"] }
 
 [examples.sumitrust2019-c]
+type = "Normal"
 name = "Sumitomo Mitsui Trust Bank Programming Contest 2019: C - 100 to 105"
 url = "https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c"
 matching = "Words"
diff --git a/tools/test-with-generated-opts/Cargo.toml b/tools/test-with-generated-opts/Cargo.toml
index 3841904..525fc90 100644
--- a/tools/test-with-generated-opts/Cargo.toml
+++ b/tools/test-with-generated-opts/Cargo.toml
@@ -6,21 +6,24 @@ publish = false
 description = "Test with `rustc-dep-option-generator`."
 
 [dependencies]
-anyhow = "1.0.25"
+anyhow = "1.0.26"
 approx = "0.3.2"
 env_logger = "0.7.1"
-indexmap = { version = "1.3.0", features = ["serde-1"] }
+indexmap = { version = "1.3.1", features = ["serde-1"] }
 itertools = "0.8.2"
 log = "0.4.8"
-nom = "5.0.1"
-once_cell = "1.2.0"
-regex = "1.3.1"
+maplit = "1.0.2"
+nom = "5.1.0"
+once_cell = "1.3.0"
+regex = "1.3.3"
 scraper = "0.11.0"
 serde = { version = "1.0.104", features = ["derive"] }
 serde_json = "1.0.44"
 shell-escape = "0.1.4"
-structopt = "0.3.5"
+structopt = "0.3.7"
 toml = "0.5.5"
-ureq = "0.11.2"
-url = { version = "2.1.0", features = ["serde"] }
+ureq = "0.11.3"
+url = { version = "2.1.1", features = ["serde"] }
 which = { version = "3.1.0", default-features = false }
+either = "1.5.3"
+fallible-iterator = "0.2.0"
diff --git a/tools/test-with-generated-opts/src/main.rs b/tools/test-with-generated-opts/src/main.rs
index 493000f..310aa92 100644
--- a/tools/test-with-generated-opts/src/main.rs
+++ b/tools/test-with-generated-opts/src/main.rs
@@ -1,9 +1,12 @@
 use anyhow::{anyhow, ensure, Context as _};
 use approx::{abs_diff_eq, relative_eq};
+use either::Either;
 use env_logger::fmt::Color;
+use fallible_iterator::FallibleIterator as _;
 use indexmap::IndexMap;
 use itertools::Itertools as _;
 use log::{info, Level, LevelFilter};
+use maplit::hashmap;
 use once_cell::sync::Lazy;
 use regex::Regex;
 use scraper::{Html, Selector};
@@ -12,9 +15,10 @@ use serde::{Deserialize, Deserializer};
 use structopt::StructOpt;
 use url::Url;
 
-use std::collections::BTreeMap;
+use std::collections::{BTreeMap, BTreeSet, HashMap};
 use std::ffi::{OsStr, OsString};
 use std::io::{self, Read as _, Write as _};
+use std::ops::Deref;
 use std::path::{Path, PathBuf};
 use std::process::{Command, Output, Stdio};
 use std::str::FromStr;
@@ -66,44 +70,60 @@ fn main() -> anyhow::Result<()> {
     let tests = config
         .examples
         .iter()
-        .map(
-            |(
-                slug,
-                Example {
-                    name,
-                    url,
+        .map(|(slug, example)| {
+            let src = Path::new("./examples").join(slug).with_extension("rs");
+            let bin = config.bin.expand_path(slug)?;
+            compile(&src, &bin)?;
+
+            match example {
+                Example::Normal(Normal {
+                    base: Base { name, url },
                     matching,
                     alt_testcases,
-                },
-            )| {
-                let testcases = if let Some(alt_testcases) = alt_testcases {
-                    alt_testcases
+                }) => {
+                    let testcases = if let Some(alt_testcases) = alt_testcases {
+                        alt_testcases
+                            .iter()
+                            .enumerate()
+                            .map(|(i, c)| {
+                                ((i + 1).to_string().into(), (c.r#in.clone(), c.out.clone()))
+                            })
+                            .collect()
+                    } else {
+                        load_testcases(&config.testcases.expand_path(slug)?)?
+                    };
+                    Ok(Either::Left((name, url, bin, *matching, testcases)))
+                }
+                Example::Special(Special {
+                    base: Base { name, url },
+                    tester,
+                }) => {
+                    let tester = tester
                         .iter()
-                        .enumerate()
-                        .map(|(i, c)| ((i + 1).to_string().into(), (c.r#in.clone(), c.out.clone())))
-                        .collect()
-                } else {
-                    load_testcases(&config.testcases.expand(slug))?
-                };
-                let src = Path::new("./examples").join(slug).with_extension("rs");
-                let bin = config.bin.expand(slug);
-                compile(&src, &bin)?;
-                Ok((name, url, *matching, testcases, bin))
-            },
-        )
+                        .map(|t| t.expand_as_arg(&bin))
+                        .collect::<anyhow::Result<Vec<_>>>()?;
+                    Ok(Either::Right((name, url, bin, tester)))
+                }
+            }
+        })
         .collect::<anyhow::Result<Vec<_>>>()?;
 
-    for (name, url, matching, testcases, bin) in tests {
-        test(&name, &url, matching, &testcases, &bin)?;
+    for test in tests {
+        match test {
+            Either::Left((name, url, bin, matching, testcases)) => {
+                normal_test(&name, &url, matching, &testcases, &bin)?
+            }
+            Either::Right((name, url, bin, tester)) => special_test(&name, &url, &tester, &bin)?,
+        }
     }
     Ok(())
 }
 
 fn scrape_sample_cases(config: &Config) -> anyhow::Result<()> {
     for (slug, example) in &config.examples {
-        let dst_dir = config.testcases.expand(slug);
-        if !(dst_dir.exists() || example.alt_testcases.is_some()) {
-            let samples = get_html(&example.url)?.extract_samples()?;
+        let dst_dir = config.testcases.expand_path(slug)?;
+        if example.requires_sample_cases() && !dst_dir.exists() {
+            let samples = get_html(&example.url())?.extract_samples()?;
             save_testcases(&dst_dir, &samples)?;
         }
     }
@@ -439,7 +459,7 @@ fn compile(src: &Path, bin: &Path) -> anyhow::Result<()> {
     run_command(program, args).map(drop)
 }
 
-fn test(
+fn normal_test(
     task_name: &str,
     url: &Url,
     matching: Matching,
@@ -491,6 +511,29 @@ fn test(
     Ok(())
 }
 
+fn special_test(task_name: &str, url: &Url, tester: &[OsString], bin: &Path) -> anyhow::Result<()> {
+    info!("Testing {}", bin.display());
+    info!("  Name: {:?}", task_name);
+    info!("  URL: {}", url);
+    info!("  Arguments: {:?}", tester);
+
+    let start = Instant::now();
+    let arg0 = tester.get(0).map(Deref::deref).unwrap_or_default();
+    let status = Command::new(arg0)
+        .args(&tester[1..])
+        .status()
+        .with_context(|| format!("Failed to execute {}", arg0.to_string_lossy()))?;
+    let stop = Instant::now();
+    let time = (stop - start).as_millis();
+    let verdict = if status.success() { "AC" } else { "WA" };
+
+    info!("{} in {}ms", verdict, time);
+    if verdict != "AC" {
+        return Err(anyhow!("Test failed"));
+    }
+    Ok(())
+}
+
 fn read_to_string(path: impl AsRef<Path>) -> anyhow::Result<String> {
     let path = path.as_ref();
     fs::read_to_string(path).with_context(|| format!("Failed to read {}", path.display()))
@@ -547,52 +590,70 @@ impl BoolExt for bool {
 
 #[derive(Debug, Deserialize)]
 struct Config {
-    bin: PathTemplate,
-    testcases: PathTemplate,
+    bin: Template,
+    testcases: Template,
     examples: IndexMap<String, Example>,
 }
 
 #[derive(Debug)]
-struct PathTemplate(Vec<PathTemplateToken>);
-
-impl PathTemplate {
-    fn expand(&self, slug: &str) -> PathBuf {
-        self.0
-            .iter()
-            .map(|token| match token {
-                PathTemplateToken::Brace => slug,
-                PathTemplateToken::Plain(plain) => plain,
-            })
-            .join("")
-            .into()
+struct Template(Vec<TemplateToken>);
+
+impl Template {
+    fn expand(&self, vars: &HashMap<&str, &OsStr>) -> anyhow::Result<OsString> {
+        let args = self.0.iter().map(|token| match token {
+            TemplateToken::Brace(name) => vars.get(&**name).copied().ok_or_else(|| {
+                anyhow!(
+                    "Undefined variable {:?} (expected {:?})",
+                    name,
+                    vars.keys().collect::<BTreeSet<_>>(),
+                )
+            }),
+            TemplateToken::Plain(plain) => Ok(plain.as_ref()),
+        });
+        fallible_iterator::convert(args).fold(OsString::new(), |mut acc, arg| {
+            acc.push(arg);
+            Ok(acc)
+        })
+    }
+
+    fn expand_path(&self, slug: &str) -> anyhow::Result<PathBuf> {
+        let vars = hashmap!("problem" => slug.as_ref());
+        self.expand(&vars).map(Into::into)
+    }
+
+    fn expand_as_arg(&self, bin: &Path) -> anyhow::Result<OsString> {
+        let vars = hashmap!("bin" => bin.as_ref());
+        self.expand(&vars)
     }
 }
 
-impl<'de> Deserialize<'de> for PathTemplate {
+impl<'de> Deserialize<'de> for Template {
     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
     where
         D: Deserializer<'de>,
     {
         use nom::branch::alt;
         use nom::bytes::complete::take_while1;
-        use nom::character::complete::{char, space0};
+        use nom::character::complete::{alphanumeric1, char, space0};
         use nom::multi::many0;
         use nom::IResult;
 
-        fn tokens(input: &str) -> IResult<&str, Vec<PathTemplateToken>> {
+        fn tokens(input: &str) -> IResult<&str, Vec<TemplateToken>> {
             many0(alt((brace, plain)))(input)
         }
 
-        fn brace(input: &str) -> IResult<&str, PathTemplateToken> {
+        fn brace(input: &str) -> IResult<&str, TemplateToken> {
             let (input, _) = char('{')(input)?;
             let (input, _) = space0(input)?;
+            let (input, name) = alphanumeric1(input)?;
+            let (input, _) = space0(input)?;
             let (input, _) = char('}')(input)?;
-            Ok((input, PathTemplateToken::Brace))
+            Ok((input, TemplateToken::Brace(name.to_owned())))
         }
 
-        fn plain(input: &str) -> IResult<&str, PathTemplateToken> {
+        fn plain(input: &str) -> IResult<&str, TemplateToken> {
             let (input, plain) = take_while1(|c| !['{', '}'].contains(&c))(input)?;
-            Ok((input, PathTemplateToken::Plain(plain.to_owned())))
+            Ok((input, TemplateToken::Plain(plain.to_owned())))
         }
 
         let input = String::deserialize(deserializer)?;
@@ -607,19 +668,55 @@ impl<'de> Deserialize<'de> for PathTemplate {
 }
 
 #[derive(Debug)]
-enum PathTemplateToken {
-    Brace,
+enum TemplateToken {
+    Brace(String),
     Plain(String),
 }
 
 #[derive(Debug, Deserialize)]
-struct Example {
-    name: String,
-    url: Url,
+#[serde(tag = "type")]
+enum Example {
+    Normal(Normal),
+    Special(Special),
+}
+
+impl Example {
+    fn url(&self) -> &Url {
+        match self {
+            Self::Normal(this) => &this.base.url,
+            Self::Special(this) => &this.base.url,
+        }
+    }
+
+    fn requires_sample_cases(&self) -> bool {
+        match self {
+            Self::Normal(this) => this.alt_testcases.is_none(),
+            Self::Special(_) => false,
+        }
+    }
+}
+
+#[derive(Debug, Deserialize)]
+struct Normal {
+    #[serde(flatten)]
+    base: Base,
     matching: Matching,
     alt_testcases: Option<Vec<AltTestCase>>,
 }
 
+#[derive(Debug, Deserialize)]
+struct Special {
+    #[serde(flatten)]
+    base: Base,
+    tester: Vec<Template>,
+}
+
+#[derive(Debug, Deserialize)]
+struct Base {
+    name: String,
+    url: Url,
+}
+
 #[derive(Debug, Clone, Copy, Deserialize)]
 enum Matching {
     Exact,

From 211ceb2a1779194a7432fcd78d91f1592894c3b4 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 17 Jan 2020 18:22:52 +0900
Subject: [PATCH 36/39] Add `--all-targets` flags

---
 .github/workflows/ci.yml | 8 ++++----
 tests/test_num_derive.rs | 1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 077dcd0..0afa29e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -181,17 +181,17 @@ jobs:
           override: true
           profile: default
 
-      - name: '`cargo clippy ${{ matrix.features }} -- -D warnings`'
+      - name: '`cargo clippy --all-targets --profile test ${{ matrix.features }} -- -D warnings`'
         uses: actions-rs/cargo@v1
         with:
           command: clippy
-          args: ${{ matrix.features }} -- -D warnings
+          args: --all-targets --profile test ${{ matrix.features }} -- -D warnings
 
-      - name: '`cargo test ${{ matrix.features }} --no-fail-fast`'
+      - name: '`cargo test --all-targets ${{ matrix.features }} --no-fail-fast`'
         uses: actions-rs/cargo@v1
         with:
           command: test
-          args: ${{ matrix.features }} --no-fail-fast
+          args: --all-targets ${{ matrix.features }} --no-fail-fast
 
       - name: '`cargo run --release`'
         uses: actions-rs/cargo@v1
diff --git a/tests/test_num_derive.rs b/tests/test_num_derive.rs
index ac5a14b..fb7d81f 100644
--- a/tests/test_num_derive.rs
+++ b/tests/test_num_derive.rs
@@ -18,6 +18,7 @@ use num_derive::{FromPrimitive, Num, NumCast, NumOps, One, ToPrimitive, Zero};
 )]
 struct Weight(i32);
 
+#[allow(clippy::eq_op)]
 #[test]
 fn check_ops() {
     let w1 = Weight(7);

From e538851508834b3c41b13a4be6355091e36a4512 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 24 Jan 2020 21:52:34 +0900
Subject: [PATCH 37/39] =?UTF-8?q?`test-with-generated-opts`=20=E2=86=92=20?=
 =?UTF-8?q?`test-examples`?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .cargo/config                                 |  2 +-
 .gitignore                                    |  2 +-
 ...-generated-opts.toml => test-examples.toml |  3 +-
 .../Cargo.toml                                | 12 +--
 .../src/main.rs                               | 76 +++++--------------
 5 files changed, 27 insertions(+), 68 deletions(-)
 rename test-with-generated-opts.toml => test-examples.toml (98%)
 rename tools/{test-with-generated-opts => test-examples}/Cargo.toml (76%)
 rename tools/{test-with-generated-opts => test-examples}/src/main.rs (92%)

diff --git a/.cargo/config b/.cargo/config
index 20f0bd6..cf13702 100644
--- a/.cargo/config
+++ b/.cargo/config
@@ -1,3 +1,3 @@
 [alias]
 dep-tests = ["run", "--manifest-path", "./tools/dep-tests/Cargo.toml", "--"]
-test-with-generated-opts = ["run", "--manifest-path", "./tools/test-with-generated-opts/Cargo.toml", "--"]
+test-examples = ["run", "--manifest-path", "./tools/test-examples/Cargo.toml", "--"]
diff --git a/.gitignore b/.gitignore
index 211ee2e..83c0e8e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 /tools/dep-tests/Cargo.lock
-/tools/test-with-generated-opts/Cargo.lock
+/tools/test-examples/Cargo.lock
 **/target/
 **/*.rs.bk
 **/*~
diff --git a/test-with-generated-opts.toml b/test-examples.toml
similarity index 98%
rename from test-with-generated-opts.toml
rename to test-examples.toml
index 7d0d572..3ee9139 100644
--- a/test-with-generated-opts.toml
+++ b/test-examples.toml
@@ -1,7 +1,6 @@
 # Dropboxからのダウンロードは行なわない。（面倒なのと誰のアカウントを使うかという問題がある）
 
-bin = "./target/test-with-generated-opts/bin/{problem}"
-testcases = "./target/test-with-generated-opts/testcases/{problem}"
+testcases = "./target/test-examples/testcases/{problem}"
 
 [examples.abc054-c]
 type = "Normal"
diff --git a/tools/test-with-generated-opts/Cargo.toml b/tools/test-examples/Cargo.toml
similarity index 76%
rename from tools/test-with-generated-opts/Cargo.toml
rename to tools/test-examples/Cargo.toml
index 525fc90..35512c4 100644
--- a/tools/test-with-generated-opts/Cargo.toml
+++ b/tools/test-examples/Cargo.toml
@@ -1,9 +1,9 @@
 [package]
-name = "test-with-generated-opts"
+name = "test-examples"
 version = "0.0.0"
 edition = "2018"
 publish = false
-description = "Test with `rustc-dep-option-generator`."
+description = "Test the examples"
 
 [dependencies]
 anyhow = "1.0.26"
@@ -14,14 +14,14 @@ itertools = "0.8.2"
 log = "0.4.8"
 maplit = "1.0.2"
 nom = "5.1.0"
-once_cell = "1.3.0"
+once_cell = "1.3.1"
 regex = "1.3.3"
 scraper = "0.11.0"
 serde = { version = "1.0.104", features = ["derive"] }
-serde_json = "1.0.44"
+serde_json = "1.0.45"
 shell-escape = "0.1.4"
-structopt = "0.3.7"
-toml = "0.5.5"
+structopt = "0.3.8"
+toml = "0.5.6"
 ureq = "0.11.3"
 url = { version = "2.1.1", features = ["serde"] }
 which = { version = "3.1.0", default-features = false }
diff --git a/tools/test-with-generated-opts/src/main.rs b/tools/test-examples/src/main.rs
similarity index 92%
rename from tools/test-with-generated-opts/src/main.rs
rename to tools/test-examples/src/main.rs
index 310aa92..100c6a2 100644
--- a/tools/test-with-generated-opts/src/main.rs
+++ b/tools/test-examples/src/main.rs
@@ -20,7 +20,7 @@ use std::ffi::{OsStr, OsString};
 use std::io::{self, Read as _, Write as _};
 use std::ops::Deref;
 use std::path::{Path, PathBuf};
-use std::process::{Command, Output, Stdio};
+use std::process::{Command, Stdio};
 use std::str::FromStr;
 use std::time::Instant;
 use std::{env, f64, fs};
@@ -30,7 +30,7 @@ struct Opt {
     #[structopt(
         long,
         value_name("PATH"),
-        default_value("./test-with-generated-opts.toml"),
+        default_value("./test-examples.toml"),
         help("Path to the config")
     )]
     config: PathBuf,
@@ -60,20 +60,23 @@ fn main() -> anyhow::Result<()> {
             write_with_style(Color::Black, false, true, "]")?;
             writeln!(buf, " {}", record.args())
         })
-        .filter_module("test_with_generated_opts", LevelFilter::Info)
+        .filter_module("test_examples", LevelFilter::Info)
         .init();
 
     let config = read_toml::<_, Config>(config)?;
 
     scrape_sample_cases(&config)?;
+    cargo_build_examples_release()?;
 
     let tests = config
         .examples
         .iter()
         .map(|(slug, example)| {
-            let src = Path::new("./examples").join(slug).with_extension("rs");
-            let bin = config.bin.expand_path(slug)?;
-            compile(&src, &bin)?;
+            let bin = Path::new(".")
+                .join("target")
+                .join("release")
+                .join("examples")
+                .join(slug);
 
             match example {
                 Example::Normal(Normal {
@@ -131,8 +134,7 @@ fn scrape_sample_cases(config: &Config) -> anyhow::Result<()> {
 }
 
 fn get_html(url: &Url) -> anyhow::Result<Html> {
-    static USER_AGENT: &str =
-        "test-with-generated-opts <https://github.com/rust-lang-ja/atcoder-rust-base>";
+    static USER_AGENT: &str = "test-examples <https://github.com/rust-lang-ja/atcoder-rust-base>";
 
     info!("GET: {}", url);
 
@@ -387,11 +389,11 @@ fn load_testcases(dir: &Path) -> anyhow::Result<BTreeMap<OsString, (String, Stri
         .collect()
 }
 
-fn compile(src: &Path, bin: &Path) -> anyhow::Result<()> {
+fn cargo_build_examples_release() -> anyhow::Result<()> {
     fn run_command<S1: AsRef<OsStr>, S2: AsRef<OsStr>, I: IntoIterator<Item = S2>>(
         program: S1,
         args: I,
-    ) -> anyhow::Result<Vec<u8>> {
+    ) -> anyhow::Result<()> {
         let program = program.as_ref();
         let args = args.into_iter().collect::<Vec<_>>();
 
@@ -405,58 +407,17 @@ fn compile(src: &Path, bin: &Path) -> anyhow::Result<()> {
                 .format_with("", |s, f| f(&format_args!(" {}", s))),
         );
 
-        let Output { status, stdout, .. } = Command::new(program)
-            .args(&args)
-            .stdin(Stdio::null())
-            .stderr(Stdio::inherit())
-            .output()?;
-
+        let status = Command::new(program).args(&args).status()?;
         if !status.success() {
             return Err(anyhow!("{}: {}", program.to_string_lossy(), status));
         }
-        Ok(stdout)
-    }
-
-    if let (Ok(src_metadata), Ok(bin_metadata)) = (src.metadata(), bin.metadata()) {
-        if src_metadata.modified()? < bin_metadata.modified()? {
-            info!("{} is up to date.", bin.display());
-            return Ok(());
-        }
-    }
-
-    if let Some(parent) = bin.parent() {
-        if !parent.exists() {
-            create_dir_all(parent)?;
-        }
+        Ok(())
     }
 
-    let generated_opts = {
-        let program = which::which("rustc-dep-option-generator")?;
-        let stdout = run_command(&program, &["--format", "json"])?;
-        serde_json::from_slice::<Vec<String>>(&stdout)
-            .with_context(|| format!("{}: invalid output", program.to_string_lossy()))?
-    };
-
-    let program = env::var_os("RUSTC")
-        .map(Ok)
-        .unwrap_or_else(|| which::which("rustc").map(Into::into))?;
-
-    let args = {
-        let mut args = vec![
-            OsString::from("--edition"),
-            OsString::from("2018"),
-            OsString::from("-C"),
-            OsString::from("opt-level=3"),
-            OsString::from("-o"),
-            OsString::from(bin),
-        ];
-        for opt in generated_opts {
-            args.push(opt.into());
-        }
-        args.push(src.to_owned().into());
-        args
-    };
-    run_command(program, args).map(drop)
+    run_command(
+        env::var_os("CARGO").unwrap_or_else(|| "cargo".into()),
+        &["build", "--examples", "--release"],
+    )
 }
 
 fn normal_test(
@@ -590,7 +551,6 @@ impl BoolExt for bool {
 
 #[derive(Debug, Deserialize)]
 struct Config {
-    bin: Template,
     testcases: Template,
     examples: IndexMap<String, Example>,
 }

From 5340eed1fd929a223a84f2c68c2e8d99eaa2572d Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 24 Jan 2020 22:19:32 +0900
Subject: [PATCH 38/39] Stop using some of the crates

---
 .github/workflows/ci.yml |  19 ++--
 examples/abc084-d.rs     |  46 --------
 examples/abc120-d.rs     |  55 ---------
 examples/abc129-f.rs     |  11 +-
 examples/abc142-d.rs     |  31 -----
 examples/apg4b-a.rs      |  23 ----
 examples/apg4b-ex26.rs   | 239 ---------------------------------------
 test-examples.toml       |  32 +-----
 8 files changed, 18 insertions(+), 438 deletions(-)
 delete mode 100644 examples/abc084-d.rs
 delete mode 100644 examples/abc120-d.rs
 delete mode 100644 examples/abc142-d.rs
 delete mode 100644 examples/apg4b-ex26.rs

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0afa29e..b2528fa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,14 +43,14 @@ jobs:
           command: fmt
           args: --manifest-path ./tools/dep-tests/Cargo.toml -- --check
 
-      - name: '`cargo fmt --manifest-path ./tools/test-with-generated-opts/Cargo.toml -- --check`'
+      - name: '`cargo fmt --manifest-path ./tools/test-examples/Cargo.toml -- --check`'
         uses: actions-rs/cargo@v1
         with:
           command: fmt
-          args: --manifest-path ./tools/test-with-generated-opts/Cargo.toml -- --check
+          args: --manifest-path ./tools/test-examples/Cargo.toml -- --check
 
-  test-with-generated-opts:
-    name: test-with-generated-opts
+  test-examples:
+    name: test-examples
     runs-on: ubuntu-18.04
 
     steps:
@@ -75,11 +75,11 @@ jobs:
           command: install
           args: --git https://github.com/rust-lang-ja/atcoder-rustc-dep-option-generator
 
-      - name: '`cargo clippy --all-features --manifest-path ./tools/test-with-generated-opts/Cargo.toml -- -D warnings`'
+      - name: '`cargo clippy --all-features --manifest-path ./tools/test-examples/Cargo.toml -- -D warnings`'
         uses: actions-rs/cargo@v1
         with:
           command: clippy
-          args: --all-features --manifest-path ./tools/test-with-generated-opts/Cargo.toml -- -D warnings
+          args: --all-features --manifest-path ./tools/test-examples/Cargo.toml -- -D warnings
 
       - name: '`cargo build --all-features --release`'
         uses: actions-rs/cargo@v1
@@ -87,13 +87,10 @@ jobs:
           command: build
           args: --all-features --release
 
-      - name: '`chmod -R a=rX-w ./target/release`'
-        run: chmod -R a=rX-w ./target/release
-
-      - name: '`cargo test-with-generated-opts`'
+      - name: '`cargo test-examples`'
         uses: actions-rs/cargo@v1
         with:
-          command: test-with-generated-opts
+          command: test-examples
 
   build:
     strategy:
diff --git a/examples/abc084-d.rs b/examples/abc084-d.rs
deleted file mode 100644
index 318d167..0000000
--- a/examples/abc084-d.rs
+++ /dev/null
@@ -1,46 +0,0 @@
-// https://atcoder.jp/contests/abc084/tasks/abc084_d
-
-use itertools_num::ItertoolsNum as _;
-use primal::Sieve;
-
-use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
-
-fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
-    }
-
-    let lrs = read!([(usize, usize)]);
-
-    let max = lrs.iter().map(|&(_, r)| r).max().unwrap();
-    let sieve = Sieve::new(max);
-    let nums = (0..=max)
-        .map(|k| u32::from(sieve.is_prime(k) && sieve.is_prime((k + 1) / 2)))
-        .cumsum()
-        .collect::<Vec<u32>>();
-
-    buf_print(|stdout| {
-        macro_rules! println(($($tt:tt)*) => (writeln!(stdout, $($tt)*).unwrap()));
-
-        for (l, r) in lrs {
-            println!("{}", nums[r] - nums[l - 1]);
-        }
-    });
-}
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
-
-fn buf_print(f: impl FnOnce(&mut BufWriter<StdoutLock>)) {
-    let stdout = io::stdout();
-    let mut stdout = BufWriter::new(stdout.lock());
-    f(&mut stdout);
-    stdout.flush().unwrap();
-}
diff --git a/examples/abc120-d.rs b/examples/abc120-d.rs
deleted file mode 100644
index 20d10ad..0000000
--- a/examples/abc120-d.rs
+++ /dev/null
@@ -1,55 +0,0 @@
-// https://atcoder.jp/contests/abc120/tasks/abc120_d
-
-use union_find::{QuickFindUf, UnionBySize, UnionFind as _};
-
-use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
-
-fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
-        ({ Usize1 }) => {
-            read!(usize) - 1
-        };
-    }
-
-    let n = read!(usize);
-    let abs = read!([({ Usize1 }, { Usize1 })]);
-
-    let max = n * (n - 1) / 2;
-    let mut uf = QuickFindUf::<UnionBySize>::new(n);
-    let mut ans_rev = vec![max];
-
-    ans_rev.extend(abs.into_iter().rev().scan(max, |cur, (a, b)| {
-        let prod = uf.get(a).size() * uf.get(b).size();
-        if uf.union(a, b) {
-            *cur -= prod;
-        }
-        Some(*cur)
-    }));
-    assert_eq!(ans_rev.pop(), Some(0));
-
-    buf_print(|stdout| {
-        macro_rules! println(($($tt:tt)*) => (writeln!(stdout, $($tt)*).unwrap()));
-
-        for x in ans_rev.into_iter().rev() {
-            println!("{}", x);
-        }
-    });
-}
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
-
-fn buf_print(f: impl FnOnce(&mut BufWriter<StdoutLock>)) {
-    let stdout = io::stdout();
-    let mut stdout = BufWriter::new(stdout.lock());
-    f(&mut stdout);
-    stdout.flush().unwrap();
-}
diff --git a/examples/abc129-f.rs b/examples/abc129-f.rs
index 46d43a4..9553c99 100644
--- a/examples/abc129-f.rs
+++ b/examples/abc129-f.rs
@@ -1,14 +1,13 @@
 // https://atcoder.jp/contests/abc129/tasks/abc129_f
 
-use derive_more::Display;
 use ndarray::{array, Array2, LinalgScalar};
 use num::{PrimInt, Unsigned};
 use num_derive::{One, Zero};
 
 use std::cell::Cell;
-use std::cmp;
 use std::io::{self, Read};
 use std::ops::{Add, Div, Mul, Sub};
+use std::{cmp, fmt};
 
 fn main() {
     let mut input = read_to_static(io::stdin()).split_whitespace();
@@ -59,7 +58,7 @@ thread_local! {
     static MOD: Cell<u64> = Cell::new(0);
 }
 
-#[derive(Zero, One, Display, Debug, Clone, Copy)]
+#[derive(Zero, One, Debug, Clone, Copy)]
 struct Z(u64);
 
 impl Z {
@@ -68,6 +67,12 @@ impl Z {
     }
 }
 
+impl fmt::Display for Z {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        fmt::Display::fmt(&self.0, fmt)
+    }
+}
+
 impl Add for Z {
     type Output = Self;
 
diff --git a/examples/abc142-d.rs b/examples/abc142-d.rs
deleted file mode 100644
index ca2ffb4..0000000
--- a/examples/abc142-d.rs
+++ /dev/null
@@ -1,31 +0,0 @@
-// https://atcoder.jp/contests/abc142/tasks/abc142_d
-
-use primal::Sieve;
-
-use std::cmp::max;
-use std::collections::HashSet;
-use std::io::{self, Read};
-
-fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
-
-    let (a, b): (usize, usize) = (read!(), read!());
-
-    let sieve = Sieve::new(num_integer::sqrt(max(a, b)));
-    let bases = |k| -> HashSet<_> {
-        sieve
-            .factor(k)
-            .unwrap()
-            .into_iter()
-            .map(|(p, _)| p)
-            .collect()
-    };
-    println!("{}", (&bases(a) & &bases(b)).len() + 1);
-}
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/apg4b-a.rs b/examples/apg4b-a.rs
index 41e2673..6391d14 100644
--- a/examples/apg4b-a.rs
+++ b/examples/apg4b-a.rs
@@ -1,18 +1,11 @@
 // https://atcoder.jp/contests/APG4b/tasks/APG4b_a
 
-use aho_corasick as _;
 use alga as _;
-use approx as _;
 use ascii as _;
 use bitset_fixed as _;
-use defmac as _;
-use derive_more as _;
-use derive_new as _;
 use either as _;
-use euclid as _;
 use fixedbitset as _;
 use getrandom as _;
-use if_chain as _;
 use im_rc as _;
 use indexmap as _;
 use itertools as _;
@@ -20,12 +13,8 @@ use itertools_num as _;
 use lazy_static as _;
 use libm as _;
 use maplit as _;
-#[allow(unused_imports)]
-use matches::matches as _; // https://github.com/rust-lang/rust/issues/66518
-use modtype as _;
 use nalgebra as _;
 use ndarray as _;
-use nom as _;
 use num as _;
 use num_bigint as _;
 use num_complex as _;
@@ -37,10 +26,6 @@ use num_traits as _;
 use ordered_float as _;
 use permutohedron as _;
 use petgraph as _;
-use primal as _;
-use primal_check as _;
-use primal_estimate as _;
-use primal_sieve as _;
 use proconio as _;
 use rand as _;
 use rand_chacha as _;
@@ -51,18 +36,10 @@ use rand_pcg as _;
 use regex as _;
 use rustc_hash as _;
 use smallvec as _;
-use strsim as _;
 use superslice as _;
-use take_mut as _;
 use text_io as _;
-use union_find as _;
 use whiteread as _;
 
-#[cfg(feature = "jemalloc-ctl")]
-use jemalloc_ctl as _;
-#[cfg(feature = "jemallocator")]
-use jemallocator as _;
-
 fn main() {
     println!("Hello, world!");
 }
diff --git a/examples/apg4b-ex26.rs b/examples/apg4b-ex26.rs
deleted file mode 100644
index 09c8cb7..0000000
--- a/examples/apg4b-ex26.rs
+++ /dev/null
@@ -1,239 +0,0 @@
-// https://atcoder.jp/contests/APG4b/tasks/APG4b_bw
-
-use itertools::Itertools as _;
-use maplit::hashmap;
-use matches::matches;
-
-use std::collections::HashMap;
-use std::io::{self, Read};
-use std::str::FromStr;
-
-fn main() {
-    let mut env = hashmap!();
-    for line in read_to_static(io::stdin()).lines().skip(1) {
-        line.parse::<Stmt>().unwrap().eval(&mut env);
-    }
-}
-
-#[derive(Debug)]
-enum Stmt {
-    DeclInt(char, IntExpr),
-    PrintInt(IntExpr),
-    DeclVec(char, VecExpr),
-    PrintVec(VecExpr),
-}
-
-impl Stmt {
-    fn eval(&self, env: &mut HashMap<char, Val>) {
-        match self {
-            Self::DeclInt(name, expr) => {
-                env.insert(*name, Val::Int(expr.eval(env)));
-            }
-            Self::PrintInt(expr) => println!("{}", expr.eval(env)),
-            Self::DeclVec(name, expr) => {
-                env.insert(*name, Val::Vec(expr.eval(env)));
-            }
-            Self::PrintVec(expr) => println!("[ {} ]", expr.eval(env).iter().format(" ")),
-        }
-    }
-}
-
-impl FromStr for Stmt {
-    type Err = (String, usize, nom::error::ErrorKind);
-
-    fn from_str(input: &str) -> Result<Self, (String, usize, nom::error::ErrorKind)> {
-        use nom::branch::alt;
-        use nom::bytes::complete::{tag, take_while_m_n};
-        use nom::character::complete::{char, one_of, space0, space1};
-        use nom::combinator::{map, map_res};
-        use nom::multi::{fold_many0, separated_list};
-        use nom::sequence::{pair, preceded, tuple};
-        use nom::IResult;
-
-        fn decl_int(input: &str) -> IResult<&str, Stmt> {
-            let (input, _) = space0(input)?;
-            let (input, _) = tag("int")(input)?;
-            let (input, _) = space1(input)?;
-            let (input, name) = var_name(input)?;
-            let (input, _) = space0(input)?;
-            let (input, _) = tag("=")(input)?;
-            let (input, _) = space0(input)?;
-            let (input, expr) = int_expr(input)?;
-            let (input, _) = space0(input)?;
-            let (input, _) = char(';')(input)?;
-            Ok((input, Stmt::DeclInt(name, expr)))
-        }
-
-        fn print_int(input: &str) -> IResult<&str, Stmt> {
-            let (input, _) = space0(input)?;
-            let (input, _) = tag("print_int")(input)?;
-            let (input, _) = space1(input)?;
-            let (input, expr) = int_expr(input)?;
-            let (input, _) = space0(input)?;
-            let (input, _) = tag(";")(input)?;
-            Ok((input, Stmt::PrintInt(expr)))
-        }
-
-        fn decl_vec(input: &str) -> IResult<&str, Stmt> {
-            let (input, _) = space0(input)?;
-            let (input, _) = tag("vec")(input)?;
-            let (input, _) = space1(input)?;
-            let (input, name) = var_name(input)?;
-            let (input, _) = space0(input)?;
-            let (input, _) = char('=')(input)?;
-            let (input, _) = space0(input)?;
-            let (input, val) = vec_expr(input)?;
-            let (input, _) = space0(input)?;
-            let (input, _) = char(';')(input)?;
-            Ok((input, Stmt::DeclVec(name, val)))
-        }
-
-        fn print_vec(input: &str) -> IResult<&str, Stmt> {
-            let (input, _) = space0(input)?;
-            let (input, _) = tag("print_vec")(input)?;
-            let (input, _) = space1(input)?;
-            let (input, val) = vec_expr(input)?;
-            let (input, _) = space0(input)?;
-            let (input, _) = char(';')(input)?;
-            Ok((input, Stmt::PrintVec(val)))
-        }
-
-        fn int_expr(input: &str) -> IResult<&str, IntExpr> {
-            let (input, expr) = int_term(input)?;
-            fold_many0(
-                preceded(space0, pair(one_of("+-"), preceded(space0, int_term))),
-                expr,
-                |expr, (op, term)| match op {
-                    '+' => IntExpr::Add(Box::new(expr), Box::new(term)),
-                    '-' => IntExpr::Sub(Box::new(expr), Box::new(term)),
-                    _ => unreachable!(),
-                },
-            )(input)
-        }
-
-        fn int_term(input: &str) -> IResult<&str, IntExpr> {
-            let (input, _) = space0(input)?;
-            alt((
-                map(var_name, IntExpr::Var),
-                map(
-                    take_while_m_n::<_, &str, _>(1, 1, |c| matches!(c, '0'..='9')),
-                    |s| IntExpr::Lit(s.parse().unwrap()),
-                ),
-            ))(input)
-        }
-
-        fn vec_expr(input: &str) -> IResult<&str, VecExpr> {
-            let (input, expr) = vec_term(input)?;
-            fold_many0(
-                preceded(space0, pair(one_of("+-"), preceded(space0, vec_term))),
-                expr,
-                |expr, (op, term)| match op {
-                    '+' => VecExpr::Add(Box::new(expr), Box::new(term)),
-                    '-' => VecExpr::Sub(Box::new(expr), Box::new(term)),
-                    _ => unreachable!(),
-                },
-            )(input)
-        }
-
-        fn vec_term(input: &str) -> IResult<&str, VecExpr> {
-            let (input, _) = space0(input)?;
-            alt((map(var_name, VecExpr::Var), |input| {
-                let (input, _) = char('[')(input)?;
-                let (input, _) = space0(input)?;
-                let (input, vec) =
-                    separated_list(tuple((space0, char(','), space0)), int_expr)(input)?;
-                let (input, _) = space0(input)?;
-                let (input, _) = char(']')(input)?;
-                Ok((input, VecExpr::Lit(vec)))
-            }))(input)
-        }
-
-        fn var_name(input: &str) -> IResult<&str, char> {
-            map_res(take_while_m_n(1, 1, |c| matches!(c, 'a'..='z')), str::parse)(input)
-        }
-
-        decl_int(input)
-            .or_else(|_| print_int(input))
-            .or_else(|_| decl_vec(input))
-            .or_else(|_| print_vec(input))
-            .map(|(_, stmt)| stmt)
-            .map_err(|err| match err {
-                nom::Err::Incomplete(_) => unreachable!(),
-                nom::Err::Error((s, k)) | nom::Err::Failure((s, k)) => {
-                    (input.to_owned(), input.len() - s.len(), k)
-                }
-            })
-    }
-}
-
-#[derive(Debug)]
-enum Val {
-    Int(i32),
-    Vec(Vec<i32>),
-}
-
-impl Val {
-    fn unwrap_int(&self) -> i32 {
-        match self {
-            Self::Int(n) => *n,
-            Self::Vec(_) => panic!(),
-        }
-    }
-
-    fn unwrap_vec(&self) -> &[i32] {
-        match self {
-            Self::Int(_) => panic!(),
-            Self::Vec(vec) => vec,
-        }
-    }
-}
-
-#[derive(Debug, Clone)]
-enum IntExpr {
-    Lit(i32),
-    Var(char),
-    Add(Box<Self>, Box<Self>),
-    Sub(Box<Self>, Box<Self>),
-}
-
-impl IntExpr {
-    fn eval(&self, env: &HashMap<char, Val>) -> i32 {
-        match self {
-            Self::Lit(n) => *n,
-            Self::Var(s) => env[s].unwrap_int(),
-            Self::Add(l, r) => l.eval(env) + r.eval(env),
-            Self::Sub(l, r) => l.eval(env) - r.eval(env),
-        }
-    }
-}
-
-#[derive(Debug, Clone)]
-enum VecExpr {
-    Lit(Vec<IntExpr>),
-    Var(char),
-    Add(Box<Self>, Box<Self>),
-    Sub(Box<Self>, Box<Self>),
-}
-
-impl VecExpr {
-    fn eval(&self, env: &HashMap<char, Val>) -> Vec<i32> {
-        match self {
-            Self::Lit(v) => v.iter().map(|x| x.eval(env)).collect(),
-            Self::Var(s) => env[s].unwrap_vec().to_owned(),
-            Self::Add(l, r) => {
-                let (l, r) = (l.eval(env), r.eval(env));
-                l.into_iter().zip_eq(r).map(|(l, r)| l + r).collect()
-            }
-            Self::Sub(l, r) => {
-                let (l, r) = (l.eval(env), r.eval(env));
-                l.into_iter().zip_eq(r).map(|(l, r)| l - r).collect()
-            }
-        }
-    }
-}
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/test-examples.toml b/test-examples.toml
index 3ee9139..12eb31f 100644
--- a/test-examples.toml
+++ b/test-examples.toml
@@ -44,13 +44,6 @@ url = "https://atcoder.jp/contests/abc073/tasks/abc073_d"
 matching = "Words"
 meta = { using = ["itertools", "petgraph"] }
 
-[examples.abc084-d]
-type = "Normal"
-name = "ABC084: D - 2017-like Number"
-url = "https://atcoder.jp/contests/abc084/tasks/abc084_d"
-matching = "Words"
-meta = { using = ["itertools-num", "primal"] }
-
 [examples.abc118-b-naive]
 type = "Normal"
 name = "ABC118: B - Foods Loved by Everyone"
@@ -79,13 +72,6 @@ url = "https://atcoder.jp/contests/abc118/tasks/abc118_b"
 matching = "Words"
 meta = { using = ["whiteread"] }
 
-[examples.abc120-d]
-type = "Normal"
-name = "ABC120: D - Decayed Bridges"
-url = "https://atcoder.jp/contests/abc120/tasks/abc120_d"
-matching = "Words"
-meta = { using = ["union-find"] }
-
 [examples.abc121-b-naive]
 type = "Normal"
 name = "ABC121: B - Can you solve this?"
@@ -119,7 +105,7 @@ type = "Normal"
 name = "ABC129: F - Takahashi's Basics in Education and Learning"
 url = "https://atcoder.jp/contests/abc129/tasks/abc129_f"
 matching = "Words"
-meta = { using = ["derive_more", "ndarray", "num", "num-derive"] }
+meta = { using = ["ndarray", "num", "num-derive"] }
 
 [examples.abc141-c]
 type = "Normal"
@@ -135,13 +121,6 @@ url = "https://atcoder.jp/contests/abc142/tasks/abc142_c"
 matching = "Words"
 meta = { using = ["itertools", "superslice"] }
 
-[examples.abc142-d]
-type = "Normal"
-name = "ABC142: D - Disjoint Set of Common Divisors"
-url = "https://atcoder.jp/contests/abc142/tasks/abc142_d"
-matching = "Words"
-meta = { using = ["num-integer", "primal"] }
-
 [examples.abc144-d]
 type = "Normal"
 name = "ABC144: D - Water Bottle"
@@ -169,7 +148,7 @@ name = "APG4b: A - 1.00.はじめに"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_a"
 matching = "Exact"
 alt_testcases = [{ in = "", out = "Hello, world!\n" }]
-meta = { using = ["aho-corasick", "alga", "approx", "ascii", "bitset-fixed", "defmac", "derive_more", "derive-new", "either", "euclid", "fixedbitset", "getrandom", "jemallocator", "jemalloc-ctl", "if_chain", "im-rc", "indexmap", "itertools", "itertools-num", "lazy_static", "libm", "maplit", "matches", "modtype", "nalgebra", "ndarray", "nom", "num", "num-bigint", "num-complex", "num-derive", "num-integer", "num-iter", "num-rational", "num-traits", "ordered-float", "permutohedron", "petgraph", "primal", "primal-check", "primal-estimate", "primal-sieve", "proconio", "rand", "rand_chacha", "rand_core", "rand_distr", "rand_hc", "rand_pcg", "regex", "rustc-hash", "smallvec", "strsim", "superslice", "take_mut", "text_io", "union-find", "whiteread"] }
+meta = { using = ["alga", "ascii", "bitset-fixed", "either", "fixedbitset", "getrandom", "im-rc", "indexmap", "itertools", "itertools-num", "lazy_static", "libm", "maplit", "nalgebra", "ndarray", "num", "num-bigint", "num-complex", "num-derive", "num-integer", "num-iter", "num-rational", "num-traits", "ordered-float", "permutohedron", "petgraph", "proconio", "rand", "rand_chacha", "rand_core", "rand_distr", "rand_hc", "rand_pcg", "regex", "rustc-hash", "smallvec", "superslice", "text_io", "whiteread"] }
 
 [examples.apg4b-ex25]
 type = "Normal"
@@ -178,13 +157,6 @@ url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_bx"
 matching = "Words"
 meta = { using = ["fixedbitset", "itertools"] }
 
-[examples.apg4b-ex26]
-type = "Normal"
-name = "APG4b: EX26 - 電卓を作ろう3 / 3.06"
-url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_bw"
-matching = "Exact"
-meta = { using = ["itertools", "maplit", "matches", "nom"] }
-
 [examples.arc065-c]
 type = "Normal"
 name = "ABC049 / ARC065: C - 白昼夢 / Daydream"

From 5b68983e5e05018d0e0ef35e2f606efd5c8418e5 Mon Sep 17 00:00:00 2001
From: Ryo Yamashita <qryxip@gmail.com>
Date: Fri, 24 Jan 2020 23:58:49 +0900
Subject: [PATCH 39/39] Use proconio in most of the examples

---
 examples/abc054-c.rs        | 25 ++++--------------
 examples/abc073-d.rs        | 40 ++++++++++++++--------------
 examples/abc129-f.rs        | 32 +++++++++++++----------
 examples/abc142-c.rs        | 22 +++-------------
 examples/abc144-d.rs        | 18 +++++--------
 examples/abc150-d.rs        | 22 ++++------------
 examples/abc151-d.rs        | 37 +++++++-------------------
 examples/apg4b-ex25.rs      | 25 +++++-------------
 examples/arc065-c.rs        | 23 +++-------------
 examples/arc084-c.rs        | 23 +++++-----------
 examples/atc001-b.rs        | 52 +++++++++++++++----------------------
 examples/atc002-b.rs        | 18 +++++--------
 examples/sumitrust2019-c.rs | 16 +++---------
 test-examples.toml          | 26 +++++++++----------
 14 files changed, 130 insertions(+), 249 deletions(-)

diff --git a/examples/abc054-c.rs b/examples/abc054-c.rs
index dc13738..4f46ce8 100644
--- a/examples/abc054-c.rs
+++ b/examples/abc054-c.rs
@@ -2,24 +2,15 @@
 
 use itertools::Itertools as _;
 use petgraph::graph::UnGraph;
-
-use std::io::{self, Read};
+use proconio::input;
+use proconio::marker::Usize1;
 
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
-        ({ Usize1 }) => {
-            read!(usize) - 1
-        };
+    input! {
+        n: usize,
+        abs: [(Usize1, Usize1)],
     }
 
-    let n = read!(usize);
-    let abs = read!([({ Usize1 }, { Usize1 })]);
-
     let graph = UnGraph::<(), (), usize>::from_edges(abs);
     let ans = graph
         .node_indices()
@@ -28,9 +19,3 @@ fn main() {
         .count();
     println!("{}", ans);
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/abc073-d.rs b/examples/abc073-d.rs
index fff913d..5f3d456 100644
--- a/examples/abc073-d.rs
+++ b/examples/abc073-d.rs
@@ -1,27 +1,25 @@
 // https://atcoder.jp/contests/abc073/tasks/abc073_d
 
 use itertools::Itertools as _;
-use petgraph::graph::{NodeIndex, UnGraph};
+use num::traits::One;
+use petgraph::graph::{IndexType, NodeIndex, UnGraph};
+use proconio::input;
+use proconio::source::{Readable, Source};
 
 use std::collections::HashMap;
-use std::io::{self, Read};
+use std::io::BufRead;
+use std::marker::PhantomData;
+use std::ops::Sub;
 
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
-        ({ NodeIndex1 }) => {
-            NodeIndex::from(read!(u32) - 1)
-        };
+    input! {
+        _n: usize,
+        m: usize,
+        r: usize,
+        rs: [NodeIndex1<u32>; r],
+        abcs: [(NodeIndex1<u32>, NodeIndex1<u32>, u32); m],
     }
 
-    let (_, m, r) = read!((usize, usize, usize));
-    let rs = read!([{ NodeIndex1 }; r]);
-    let abcs = read!([({ NodeIndex1 }, { NodeIndex1 }, u32); m]);
-
     let graph = UnGraph::<(), u32>::from_edges(abcs);
 
     let dijkstra = rs
@@ -41,8 +39,12 @@ fn main() {
     println!("{}", ans);
 }
 
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
+struct NodeIndex1<Ix>(PhantomData<fn() -> Ix>);
+
+impl<Ix: IndexType + Readable<Output = Ix> + One + Sub<Output = Ix>> Readable for NodeIndex1<Ix> {
+    type Output = NodeIndex<Ix>;
+
+    fn read<R: BufRead, S: Source<R>>(source: &mut S) -> NodeIndex<Ix> {
+        NodeIndex::from(Ix::read(source) - Ix::one())
+    }
 }
diff --git a/examples/abc129-f.rs b/examples/abc129-f.rs
index 9553c99..53e5d8b 100644
--- a/examples/abc129-f.rs
+++ b/examples/abc129-f.rs
@@ -3,19 +3,21 @@
 use ndarray::{array, Array2, LinalgScalar};
 use num::{PrimInt, Unsigned};
 use num_derive::{One, Zero};
+use proconio::input;
+use proconio::source::{Readable, Source};
 
 use std::cell::Cell;
-use std::io::{self, Read};
+use std::io::BufRead;
 use std::ops::{Add, Div, Mul, Sub};
 use std::{cmp, fmt};
 
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
-
-    let (l, a, b, m): (u64, u64, u64, u64) = (read!(), read!(), read!(), read!());
-
-    MOD.with(|cell| cell.set(m));
+    input! {
+        l: u64,
+        a: u64,
+        b: u64,
+        _m: Mod,
+    }
 
     let count = |d| -> _ {
         let count =
@@ -58,6 +60,16 @@ thread_local! {
     static MOD: Cell<u64> = Cell::new(0);
 }
 
+enum Mod {}
+
+impl Readable for Mod {
+    type Output = ();
+
+    fn read<R: BufRead, S: Source<R>>(source: &mut S) {
+        MOD.with(|cell| cell.set(u64::read(source)));
+    }
+}
+
 #[derive(Zero, One, Debug, Clone, Copy)]
 struct Z(u64);
 
@@ -104,9 +116,3 @@ impl Div for Z {
         unreachable!("should not be performed")
     }
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/abc142-c.rs b/examples/abc142-c.rs
index 45d2ad3..c92f705 100644
--- a/examples/abc142-c.rs
+++ b/examples/abc142-c.rs
@@ -1,29 +1,15 @@
 // https://atcoder.jp/contests/abc142/tasks/abc142_c
 
 use itertools::Itertools as _;
+use proconio::input;
+use proconio::marker::Isize1;
 use superslice::Ext2 as _;
 
-use std::io::{self, Read};
-
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
-        ({ Isize1 }) => {
-            read!(isize) - 1
-        };
+    input! {
+        mut a: [Isize1],
     }
 
-    let mut a = read!([{ Isize1 }]);
     a.invert_permutation();
     println!("{}", a.iter().map(|a| a + 1).format(" "));
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/abc144-d.rs b/examples/abc144-d.rs
index 47efb32..532d589 100644
--- a/examples/abc144-d.rs
+++ b/examples/abc144-d.rs
@@ -1,13 +1,15 @@
 // https://atcoder.jp/contests/abc144/tasks/abc144_d
 
+use proconio::input;
+
 use std::f64::consts::PI;
-use std::io::{self, Read};
 
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
-
-    let (a, b, x): (f64, f64, f64) = (read!(), read!(), read!());
+    input! {
+        a: f64,
+        b: f64,
+        x: f64,
+    }
 
     let ans = 180.0 / PI
         * if x >= (a.powi(2) * b) / 2.0 {
@@ -17,9 +19,3 @@ fn main() {
         };
     println!("{}", ans);
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/abc150-d.rs b/examples/abc150-d.rs
index 9925316..136d828 100644
--- a/examples/abc150-d.rs
+++ b/examples/abc150-d.rs
@@ -1,21 +1,15 @@
 // https://atcoder.jp/contests/abc150/tasks/abc150_d
 
 use itertools::Itertools as _;
-
-use std::io::{self, Read};
+use proconio::input;
 
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+    input! {
+        n: usize,
+        m: usize,
+        a: [usize; n],
     }
 
-    let (n, m) = read!((usize, usize));
-    let a = read!([usize; n]);
-
     if !a.iter().copied().map(usize::trailing_zeros).all_equal() {
         println!("0");
         return;
@@ -25,9 +19,3 @@ fn main() {
     let ans = (m + x0) / (2 * x0);
     println!("{}", ans);
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/abc151-d.rs b/examples/abc151-d.rs
index 4333a07..a5a0e75 100644
--- a/examples/abc151-d.rs
+++ b/examples/abc151-d.rs
@@ -1,35 +1,22 @@
 // https://atcoder.jp/contests/abc151/tasks/abc151_d
 
 use ndarray::Array;
+use proconio::input;
+use proconio::marker::Bytes;
 use smallvec::SmallVec;
 
-use std::io::{self, Read};
 use std::{iter, mem};
 
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
-        ({ Maze<$c:literal, ($h:expr, $w:expr)> }) => {
-            Array::from_shape_vec(
-                ($h, $w),
-                itertools::concat((0..$h).map(|_| read!({ Row<$c> }))),
-            )
-            .unwrap()
-        };
-        ({ Row<$c:literal> }) => {
-            read!({ Bytes }).into_iter().map(|c| c == $c).collect::<Vec<_>>()
-        };
-        ({ Bytes }) => {
-            read!(String).into_bytes()
-        };
+    input! {
+        h: usize,
+        w: usize,
+        sss: [Bytes; h],
     }
 
-    let (h, w) = read!((usize, usize));
-    let maze = read!({ Maze<b'.', (h, w)> });
+    let maze = Array::from_shape_vec((h, w), itertools::concat(sss))
+        .unwrap()
+        .map(|&c| c == b'.');
 
     let neighbors = Array::from_shape_fn((h, w), |(i, j)| {
         let mut neighbors = SmallVec::<[_; 4]>::new();
@@ -69,9 +56,3 @@ fn main() {
         .unwrap();
     println!("{}", ans);
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/apg4b-ex25.rs b/examples/apg4b-ex25.rs
index e68f73d..b489293 100644
--- a/examples/apg4b-ex25.rs
+++ b/examples/apg4b-ex25.rs
@@ -2,24 +2,17 @@
 
 use fixedbitset::FixedBitSet;
 use itertools::Itertools as _;
-
-use std::io::{self, Read};
+use proconio::input;
 
 #[allow(clippy::many_single_char_names)]
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+    input! {
+        a: [usize],
+        b: [usize],
+        arg0: String,
+        args: [usize; if arg0 == "subtract" { 1 } else { 0 }],
     }
 
-    let a = read!([usize]);
-    let b = read!([usize]);
-    let arg0 = read!(String);
-    let args = read!([usize; if arg0 == "subtract" { 1 } else { 0 }]);
-
     let (a, b) = (a.into_iter().collect(), b.into_iter().collect());
 
     print_set(&match (&*arg0, &*args) {
@@ -61,9 +54,3 @@ fn increment(a: &FixedBitSet) -> FixedBitSet {
 fn decrement(a: &FixedBitSet) -> FixedBitSet {
     a.ones().map(|x| (x + 49) % 50).collect()
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/arc065-c.rs b/examples/arc065-c.rs
index 3760780..fc8dfb2 100644
--- a/examples/arc065-c.rs
+++ b/examples/arc065-c.rs
@@ -1,32 +1,17 @@
 // https://atcoder.jp/contests/arc065/tasks/arc065_a
 
 use lazy_static::lazy_static;
+use proconio::input;
+use proconio::marker::Bytes;
 use regex::bytes::Regex;
 
-use std::io::{self, Read};
-
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
-        ({ Bytes }) => {
-            read!(String).into_bytes()
-        };
+    input! {
+        s: Bytes,
     }
 
-    let s = read!({ Bytes });
-
     lazy_static! {
         static ref R: Regex = Regex::new(r"\A(dream(er)?|eraser?)*\z").unwrap();
     };
     println!("{}", if R.is_match(&s) { "YES" } else { "NO" });
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/arc084-c.rs b/examples/arc084-c.rs
index b322de4..8120651 100644
--- a/examples/arc084-c.rs
+++ b/examples/arc084-c.rs
@@ -1,21 +1,16 @@
 // https://atcoder.jp/contests/arc084/tasks/arc084_a
 
+use proconio::input;
 use superslice::Ext as _;
 
-use std::io::{self, Read};
-
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+    input! {
+        n: usize,
+        mut a: [u32; n],
+        b: [u32; n],
+        mut c: [u32; n],
     }
 
-    let n = read!(usize);
-    let (mut a, b, mut c) = read!(([u32; n], [u32; n], [u32; n]));
-
     a.sort();
     c.sort();
     let ans = b
@@ -24,9 +19,3 @@ fn main() {
         .sum::<usize>();
     println!("{}", ans);
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/atc001-b.rs b/examples/atc001-b.rs
index 2c4ea57..5caa617 100644
--- a/examples/atc001-b.rs
+++ b/examples/atc001-b.rs
@@ -1,45 +1,35 @@
 // https://atcoder.jp/contests/atc001/tasks/unionfind_a
 
 use petgraph::unionfind::UnionFind;
+use proconio::source::{Readable, Source};
+use proconio::{fastout, input};
 
-use std::io::{self, BufWriter, Read, StdoutLock, Write as _};
+use std::io::BufRead;
 
+#[fastout]
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read {
-        ([$tt:tt]) => (read!([$tt; read!(usize)]));
-        ([$tt:tt; $n:expr]) => ((0..$n).map(|_| read!($tt)).collect::<Vec<_>>());
-        (($($tt:tt),+)) => (($(read!($tt)),*));
-        ($ty:ty) => (input.next().unwrap().parse::<$ty>().unwrap());
+    input! {
+        n: usize,
+        pabs: [(ZeroOne, usize, usize)],
     }
 
-    let n = read!(usize);
-    let pabs = read!([(u8, usize, usize)]);
-
     let mut uf = UnionFind::new(n);
-    buf_print(|stdout| {
-        macro_rules! println(($($tt:tt)*) => (writeln!(stdout, $($tt)*).unwrap()));
-
-        for (p, a, b) in pabs {
-            if p == 1 {
-                let same = uf.find(a) == uf.find(b);
-                println!("{}", if same { "Yes" } else { "No" });
-            } else {
-                uf.union(a, b);
-            }
+    for (p, a, b) in pabs {
+        if p {
+            let same = uf.find(a) == uf.find(b);
+            println!("{}", if same { "Yes" } else { "No" });
+        } else {
+            uf.union(a, b);
         }
-    });
+    }
 }
 
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
+enum ZeroOne {}
+
+impl Readable for ZeroOne {
+    type Output = bool;
 
-fn buf_print(f: impl FnOnce(&mut BufWriter<StdoutLock>)) {
-    let stdout = io::stdout();
-    let mut stdout = BufWriter::new(stdout.lock());
-    f(&mut stdout);
-    stdout.flush().unwrap();
+    fn read<R: BufRead, S: Source<R>>(source: &mut S) -> bool {
+        u32::read(source) == 1
+    }
 }
diff --git a/examples/atc002-b.rs b/examples/atc002-b.rs
index 54ae0bc..25a4b09 100644
--- a/examples/atc002-b.rs
+++ b/examples/atc002-b.rs
@@ -1,20 +1,14 @@
 // https://atcoder.jp/contests/atc002/tasks/atc002_b
 
 use num::BigUint;
-
-use std::io::{self, Read};
+use proconio::input;
 
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
-
-    let (n, m, p): (BigUint, BigUint, BigUint) = (read!(), read!(), read!());
+    input! {
+        n: BigUint,
+        m: BigUint,
+        p: BigUint,
+    }
 
     println!("{}", n.modpow(&p, &m));
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/examples/sumitrust2019-c.rs b/examples/sumitrust2019-c.rs
index e24269a..2c3be0c 100644
--- a/examples/sumitrust2019-c.rs
+++ b/examples/sumitrust2019-c.rs
@@ -1,14 +1,12 @@
 // https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c
 
 use fixedbitset::FixedBitSet;
-
-use std::io::{self, Read};
+use proconio::input;
 
 fn main() {
-    let mut input = read_to_static(io::stdin()).split_whitespace();
-    macro_rules! read(() => (input.next().unwrap().parse().unwrap()));
-
-    let x: usize = read!();
+    input! {
+        x: usize,
+    }
 
     let mut dp = FixedBitSet::with_capacity(x + 105);
     dp.insert(0);
@@ -20,9 +18,3 @@ fn main() {
     }
     println!("{}", u32::from(dp[x]));
 }
-
-fn read_to_static(mut source: impl Read) -> &'static str {
-    let mut input = "".to_owned();
-    source.read_to_string(&mut input).unwrap();
-    Box::leak(input.into_boxed_str())
-}
diff --git a/test-examples.toml b/test-examples.toml
index 12eb31f..9d0b69c 100644
--- a/test-examples.toml
+++ b/test-examples.toml
@@ -7,7 +7,7 @@ type = "Normal"
 name = "ABC054: C - One-stroke Path"
 url = "https://atcoder.jp/contests/abc054/tasks/abc054_c"
 matching = "Words"
-meta = { using = ["itertools", "petgraph"] }
+meta = { using = ["itertools", "petgraph", "proconio"] }
 
 [examples.abc057-b-naive]
 type = "Normal"
@@ -42,7 +42,7 @@ type = "Normal"
 name = "ABC073: D - joisino's travel"
 url = "https://atcoder.jp/contests/abc073/tasks/abc073_d"
 matching = "Words"
-meta = { using = ["itertools", "petgraph"] }
+meta = { using = ["itertools", "num", "petgraph", "proconio"] }
 
 [examples.abc118-b-naive]
 type = "Normal"
@@ -105,7 +105,7 @@ type = "Normal"
 name = "ABC129: F - Takahashi's Basics in Education and Learning"
 url = "https://atcoder.jp/contests/abc129/tasks/abc129_f"
 matching = "Words"
-meta = { using = ["ndarray", "num", "num-derive"] }
+meta = { using = ["ndarray", "num", "num-derive", "proconio"] }
 
 [examples.abc141-c]
 type = "Normal"
@@ -119,28 +119,28 @@ type = "Normal"
 name = "ABC142: C - Go to School"
 url = "https://atcoder.jp/contests/abc142/tasks/abc142_c"
 matching = "Words"
-meta = { using = ["itertools", "superslice"] }
+meta = { using = ["itertools", "proconio", "superslice"] }
 
 [examples.abc144-d]
 type = "Normal"
 name = "ABC144: D - Water Bottle"
 url = "https://atcoder.jp/contests/abc144/tasks/abc144_d"
 matching = { FloatOr = { abs = 1e-6, rel = 1e-6 } }
-meta = { using = ["libm"] }
+meta = { using = ["libm", "proconio"] }
 
 [examples.abc150-d]
 type = "Normal"
 name = "ABC150: D - Semi Common Multiple"
 url = "https://atcoder.jp/contests/abc150/tasks/abc150_d"
 matching = "Words"
-meta = { using = ["itertools", "num"] }
+meta = { using = ["itertools", "num", "proconio"] }
 
 [examples.abc151-d]
 type = "Normal"
 name = "ABC151: D - Maze Master"
 url = "https://atcoder.jp/contests/abc151/tasks/abc151_d"
 matching = "Words"
-meta = { using = ["itertools", "ndarray", "smallvec"] }
+meta = { using = ["itertools", "ndarray", "proconio", "smallvec"] }
 
 [examples.apg4b-a]
 type = "Normal"
@@ -155,35 +155,35 @@ type = "Normal"
 name = "APG4b: EX25 - 集合の操作 / 3.05"
 url = "https://atcoder.jp/contests/APG4b/tasks/APG4b_bx"
 matching = "Words"
-meta = { using = ["fixedbitset", "itertools"] }
+meta = { using = ["fixedbitset", "itertools", "proconio"] }
 
 [examples.arc065-c]
 type = "Normal"
 name = "ABC049 / ARC065: C - 白昼夢 / Daydream"
 url = "https://atcoder.jp/contests/arc065/tasks/arc065_a"
 matching = "Words"
-meta = { using = ["lazy_static", "regex"] }
+meta = { using = ["lazy_static", "proconio", "regex"] }
 
 [examples.arc084-c]
 type = "Normal"
 name = "ABC077 / ARC084: C - Snuke Festival"
 url = "https://atcoder.jp/contests/arc084/tasks/arc084_a"
 matching = "Words"
-meta = { using = ["superslice"] }
+meta = { using = ["proconio", "superslice"] }
 
 [examples.atc001-b]
 type = "Normal"
 name = "ATC001: B - Union Find"
 url = "https://atcoder.jp/contests/atc001/tasks/unionfind_a"
 matching = "Words"
-meta = { using = ["petgraph"] }
+meta = { using = ["petgraph", "proconio"] }
 
 [examples.atc002-b]
 type = "Normal"
 name = "ATC002: B - n^p mod m"
 url = "https://atcoder.jp/contests/atc002/tasks/atc002_b"
 matching = "Words"
-meta = { using = ["num"] }
+meta = { using = ["num", "proconio"] }
 
 [examples.practice-a-naive]
 type = "Normal"
@@ -250,4 +250,4 @@ type = "Normal"
 name = "Sumitomo Mitsui Trust Bank Programming Contest 2019: C - 100 to 105"
 url = "https://atcoder.jp/contests/sumitrust2019/tasks/sumitb2019_c"
 matching = "Words"
-meta = { using = ["fixedbitset"] }
+meta = { using = ["fixedbitset", "proconio"] }