Submission #1292957

#	Time	Username	Problem	Language	Result	Execution time	Memory
1292957		redminote13pro	Bank (IZhO14_bank)	C++20	0 / 100	53 ms	44928 KiB

bank

#include <bits/stdc++.h>
using namespace std;

#define print(a) for(auto x : a){cout << x << " ";}
#define scan(a) for(auto & x : a) {cin >> x;}
#define rall(a) a.rbegin() , a.rend()
#define all(a) a.begin() , a.end()
#define int long long

using ll = long long;
using ull = unsigned long long;

using pii = pair<int , int>;

const ll MOD = 1e9 + 7 , INF = 1e18 , LOG = 20 , N = 1e5 + 5;

inline void solve(){
	int n , m;
	cin >> n >> m;
	vector<int> a(n);
	scan(a);
	vector<int> b(m);
	scan(b);

	int used = 0;
	for(auto x : a){
		bool flag = false;

		for(int mask = 0; mask < (1 << m); mask++){
			if(mask & used) continue;

			int sum = 0;
			for(int j = 0; j < m; j++){
				if(mask & (1 << j)){
					sum += b[j];
				}
			}
			if(sum == x){
				used |= mask;
				flag = true;
				break;
			}
		}
		if(!flag) return cout << "NO\n" , void();
	}
	cout << "YES\n";
}
signed main(void){
	freopen("bank.in", "r", stdin);
	freopen("bank.out", "w", stdout);

	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int tt = 1;
	//cin >> tt;
	while(tt--){
		solve();
	}
	cout << "\n";
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:49:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |         freopen("bank.in", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:50:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |         freopen("bank.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 19
• Subtask 2: 0 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29