提出 #65437645

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ソースコード 拡げる

#include <bits/stdc++.h>
#define ll long long
#define rep(i, x, y) for (int i = (x); i <= (y); ++i)
#define drep(i, x, y) for (int i = (x); i >= (y); --i)
#define pb push_back
#define pii pair<int, int>
#define fi first
#define se second
#define mem(a, b) memset((a), b, sizeof(a))
#define ALL(a) (a).begin(), (a).end()
#define fastio ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
using namespace std;
template <typename T> inline void cmin(T &x, T y) { if(x > y) x = y; }
template <typename T> inline void cmax(T &x, T y) { if(x < y) x = y; }
void Fin(string s) { freopen((s + ".in").c_str(), "r", stdin); }
void Fout(string s) { freopen((s + ".out").c_str(), "w", stdout); }


int main() {
	int n, m; fastio;
	cin >> n >> m;
	vector<int> c(n);
	for(int &x : c) cin >> x;
	vector<vector<int> > f(n);
	rep(i, 1, m) {
		int k; cin >> k;
		rep(j, 1, k) {
			int x; cin >> x;
			f[x - 1].pb(i - 1);
		}
	}
	vector<int> cn(m);
	ll ans = 1e11;
	function<void(int, ll)> dfs = [&](int k, ll w) {
		if(k == n) {
			for(int x : cn) {
				if(x < 2) return;
			}
			cmin(ans, w);
			return;
		}
		dfs(k + 1, w);
		for(int x : f[k]) ++cn[x];
		dfs(k + 1, w + c[k]);
		for(int x : f[k]) ++cn[x];
		dfs(k + 1, w + (c[k] << 1));
		for(int x : f[k]) cn[x] -= 2;
	};
	dfs(0, 0);
	cout << ans << '\n';
	return 0;
}

提出情報

コンパイルエラー

Main.cpp: In function ‘void Fin(std::string)’:
Main.cpp:15:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   15 | void Fin(string s) { freopen((s + ".in").c_str(), "r", stdin); }
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp: In function ‘void Fout(std::string)’:
Main.cpp:16:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   16 | void Fout(string s) { freopen((s + ".out").c_str(), "w", stdout); }
      |                       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

ジャッジ結果