Submission #1292962

#	Time	Username	Problem	Language	Result	Execution time	Memory
1292962		redminote13pro	Bank (IZhO14_bank)	C++20	0 / 100	54 ms	45020 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){
            cout << "NO\n";
            return;
        }
    }

    cout << "YES\n";
}

signed main(void){
    freopen("bank.in", "r", stdin);
    freopen("bank.out", "w", stdout);

    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int tt = 1;
    //cin >> tt;
    while(tt--){
        solve();
    }
    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:55:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |     freopen("bank.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:56:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |     freopen("bank.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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