Submission #783774

#	Time	Username	Problem	Language	Result	Execution time	Memory
783774		nghiaaa	Bank (IZhO14_bank)	C++17	0 / 100	2 ms	340 KiB

bank

#include <bits/stdc++.h>

using namespace std;
#define int long long
multiset<int> haha;
int n,m;
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    freopen("bank.in","r",stdin);
    freopen("bank.out","w",stdout);
    cin>>n>>m;
    int check=0;
    for (int i=0;i<n;i++)
    {
        int ai;
        cin>>ai;
        haha.insert(ai);
    }
    int a[m+1];
    for (int i=0;i<m;i++)
        cin>>a[i];
    int BIT[22];
    BIT[0]=1;
    for (int i=1;i<22;i++)
        BIT[i]=BIT[i-1]<<1;
    for (int mask=1;mask<BIT[m];mask++)
    {
        if (mask&check) continue;
        int sum=0;
        for (int i=0;i<m;i++)
            if (mask&BIT[i]) sum+=a[i];
        if (haha.find(sum)!=haha.end())
        {
            haha.erase(haha.find(sum));
            check|=mask;
        }
    }
    if (haha.size()) cout<<"NO";
    else cout<<"YES";
    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:11:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     freopen("bank.in","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
bank.cpp:12:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     freopen("bank.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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