Submission #1182552

#	Time	Username	Problem	Language	Result	Execution time	Memory
1182552		hmms127	은행 (IZhO14_bank)	C++20	0 / 100	2 ms	328 KiB

bank

#include <bits/stdc++.h>
using namespace std;
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
int n,a[25];
long long c;
bool found = false;
void rec(int idx,long long sum){
    if(sum==c) {
        found=true;
        return;
    }
    if(idx==n||sum>c)return;
    rec(idx+1,sum+a[idx]);
    rec(idx+1,sum);
}

int main() {
    speed;
    freopen("bank.in", "r", stdin);
    freopen("bank.out", "w", stdout);
    int m;cin>>m>>n>>c;
    for (int i=0; i<n;i++) cin>>a[i];
    rec(0, 0);
    cout<<(found?"YES":"NO")<<'\n';
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:19:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |     freopen("bank.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:20:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |     freopen("bank.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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