제출 #783761

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
783761		nghiaaa	은행 (IZhO14_bank)	C++14	0 / 100	10 ms	392 KiB

bank

#include <bits/stdc++.h>

using namespace std;

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

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp: In function 'int main()':
bank.cpp:9:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     freopen("bank.in","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
bank.cpp:10:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     freopen("bank.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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