Submission #541169

#	Time	Username	Problem	Language	Result	Execution time	Memory
541169		status_coding	Bank (IZhO14_bank)	C++14	0 / 100	1084 ms	10588 KiB

bank

#include <bits/stdc++.h>
#pragma GCC optimize ("unroll-loops")

using namespace std;

int n,m;
int a[22], b[22];

vector<int> fr[1005];
int dp[2000005];

int main()
{
    cin>>n>>m;

    for(int i=1;i<=n;i++)
        cin>>a[i];

    for(int i=1;i<=m;i++)
        cin>>b[i];

    for(int mask=0; mask < (1<<m); mask++)
    {
        int sum = 0;

        for(int k=0;k<m;k++)
            if((mask>>k)&1)
                sum += b[k];

        if(sum <= 1000)
            fr[sum].push_back(mask);
    }

    for(int mask=0; mask < (1<<m); mask++)
        dp[mask]=true;

    for(int i=1;i<=n;i++)
    {
        for(int mask = (1<<m) - 1; mask>=0; mask--)
        {
            dp[mask] = false;

            for(int nmask : fr[a[i]])
                if( (mask | nmask) == mask && dp[mask ^ nmask] )
                {
                    dp[mask] = true;
                    break;
                }
        }
    }

    if(dp[ (1<<m) - 1 ])
        cout<<"YES";
    else
        cout<<"NO";

    return 0;
}

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