Add a test for ABC118-B

Author: qryxip

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);
+}

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,

examples/testsets/abc118-b/in/sample_01.txt

@@ -0,0 +1,4 @@
+3 4
+2 1 3
+3 1 2 3
+2 3 2

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

examples/testsets/abc118-b/in/sample_03.txt

@@ -0,0 +1,2 @@
+1 30
+3 5 10 30

examples/testsets/abc118-b/out/sample_01.txt

@@ -0,0 +1 @@
+1

examples/testsets/abc118-b/out/sample_02.txt

@@ -0,0 +1 @@
+0

examples/testsets/abc118-b/out/sample_03.txt

@@ -0,0 +1 @@
+3