Submission #711012

#	Time	Username	Problem	Language	Result	Execution time	Memory
711012		phoenix	Bank (IZhO14_bank)	C++17	100 / 100	163 ms	8624 KiB

bank

#include<bits/stdc++.h>

using namespace std;

int n, m;
int dp[(1 << 20)], w[(1 << 20)], b[20];
int sum_a[30], a[30];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin >> n >> m;
    for(int i = 1; i <= n; i++) {
        cin >> a[i];
        sum_a[i] = a[i] + sum_a[i - 1];
    }
    for(int i = 0; i < m; i++) 
        cin >> b[i];
    for(int msk = 0; msk < (1 << m); msk++) {
        for(int i = 0; i < m; i++) {
            if(msk >> i & 1) 
                w[msk] += b[i];
        }
    }
    for(int msk = 1; msk < (1 << m); msk++) {
        for(int i = 0; i < m; i++) {
            if(~msk >> i & 1) continue;
            int msk1 = msk ^ (1 << i);
            dp[msk] = max(dp[msk], dp[msk1] + (w[msk1] - sum_a[dp[msk1]] + b[i] == a[dp[msk1] + 1]));
        }
    }
    cout << (dp[(1 << m) - 1] == n ? "YES" : "NO");
}

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