atcoder/abc142E

Author: xirc

atcoder/abc142/E/main.cpp

@@ -0,0 +1,46 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+using ll = int64_t;
+using ff = long double;
+
+int N, M;
+vector<int> A;
+vector<int> C;
+
+int solve() {
+    int const inf = 1e9;
+    int const S = 1 << N;
+    vector<int> DP(S, inf);
+    DP[0] = 0;
+    for (int s = 0; s < S; ++s) {
+        if (DP[s] == inf) continue;
+        for (int i = 0; i < M; ++i) {
+            int ns = s | C[i];
+            DP[ns] = min(DP[ns], DP[s] + A[i]);
+        }
+    }
+    return (DP[S-1] == inf ? -1 : DP[S-1]);
+}
+
+int main() {
+    ios_base::sync_with_stdio(false);
+    cin.tie(0); cout.tie(0);
+
+    cin >> N >> M;
+    A.assign(M, 0);
+    C.assign(M, 0);
+    for (int i = 0; i < M; ++i) {
+        int b;
+        cin >> A[i] >> b;
+        for (int j = 0; j < b; ++j) {
+            int c;
+            cin >> c;
+            --c;
+            C[i] |= (1 << c);
+        }
+    }
+    cout << solve() << endl;
+
+    return 0;
+}