Submission #848014

#	Time	Username	Problem	Language	Result	Execution time	Memory
848014		_hbk06	Bank (IZhO14_bank)	C++14	0 / 100	49 ms	24204 KiB

bank

#include <bits/stdc++.h>
using namespace std;

bitset<21> ct[(1<<20)];

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
  	freopen("bank.in","r",stdin);
  	freopen("bank.out","w",stdout);
    int n,m,s,l;
    cin>>n>>m;
    int p[n+1],a[m];
    p[0]=0;
    for (int i=1;i<=n;++i)
        cin>>p[i],p[i]+=p[i-1];
    for (int i=0;i<m;++i)
        cin>>a[i],ct[1<<i][0]=1;
    for (int i=1;i<(1<<m);++i)
    {
        s=0;
        for (int j=0;j<m;++j)
            if (i&(1<<j))
                s+=a[j];
        l=0;
        for (int j=1;j<=n;++j)
            if (s==p[j])
                l=j;
        if (s==p[l]&&ct[i][l-1])
            ct[i][l]=1;
        for (int j=0;j<m;++j)
            if (!(i&(1<<j)))
                for (int k=0;k<=n;++k)
                    ct[i^(1<<j)][k]=ct[i^(1<<j)][k]|ct[i][k];
    }
    if (ct[(1<<m)-1][n])
        cout<<"YES";
    else
        cout<<"NO";
    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:9:11: 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:10:11: 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