Submission #93829

#	Time	Username	Problem	Language	Result	Execution time	Memory
93829		dalgerok	Bank (IZhO14_bank)	C++14	100 / 100	125 ms	8696 KiB

bank

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


const int N = 30, M = 21;



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



int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n >> m;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        a[i] += a[i - 1];
    }
    for(int i = 0; i < m; i++){
        cin >> b[i];
    }
    for(int mask = 0; mask < (1 << m); mask++){
        if(dp[mask] == n){
            return cout << "YES", 0;
        }
        for(int i = 0; i < m; i++){
            if((mask >> i) & 1){
                continue;
            }
            sum[(mask ^ (1 << i))] = sum[mask] + b[i];
            if(a[dp[mask] + 1] == sum[mask] + b[i]){
                dp[(mask ^ (1 << i))] = max(dp[(mask ^ (1 << i))], dp[mask] + 1);
            }
            else{
                dp[(mask ^ (1 << i))] = max(dp[(mask ^ (1 << i))], dp[mask]);
            }
        }
    }
    cout << "NO";
}

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