Submission #640824

#	Time	Username	Problem	Language	Result	Execution time	Memory
640824		phoenix	Bank (IZhO14_bank)	C++17	52 / 100	15 ms	596 KiB

bank

#include<bits/stdc++.h>

using namespace std;

const int N = 20; const int M = 14;

int n, m;
int a[ N ], b[ M ];
int w[(1 << M)], dp[(1 << M)];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin >> n >> m;
    for(int i = 0;i < n;i++) 
        cin >> a[ i ];
    for(int i = 0;i < m;i++) 
        cin >> b[ i ];
    for(int msk = 1;msk < (1 << m);msk++) 
        for(int i = 0;i < m;i++) 
            if(msk & (1 << i)) 
                w[ msk ] += b[ i ];

    for(int msk = 1;msk < (1 << m);msk++) {
        for(int m = msk;m > 0;m = msk & (m - 1)) {
            dp[ msk ] = max(dp[ msk ], dp[(msk ^ m)] + (w[ m ] == a[ dp[(msk ^ m)] ]));
        }
    }
    cout << (dp[ (1 << m) - 1 ] == n ? "YES\n" : "NO\n");
}

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