Submission #1228937

#	Time	Username	Problem	Language	Result	Execution time	Memory
1228937		darkdraven	Bank (IZhO14_bank)	C++20	0 / 100	1 ms	324 KiB

bank

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
#define nl "\n"
#define sp " "
#define name "bank"
#define int long long

int n, m;
int a[21], b[21];

bool rec(int id, int mask){
    if(id == m){
        int tmp = 0;
        for(int i = 0; i<m; i++){
            if(mask & (1<<i)) tmp += b[i];
        }
        return (tmp == a[0]);
    }

    return max(rec(id+1, mask), rec(id+1, mask | (1<<id)));
}

void subtask1(){
    if(rec(0, 0)) cout << "YES";
    else cout << "NO";
}

signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    freopen(name".in", "r", stdin);
    freopen(name".out", "w", stdout);

    cin >> n >> m;
    for(int i = 0; i<n; i++) cin >> a[i];
    for(int j = 0; j<m; j++) cin >> b[j];

    if(n == 1) subtask1();

    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:35:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |     freopen(name".in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:36:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |     freopen(name".out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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