Submission #1277844

#	Time	Username	Problem	Language	Result	Execution time	Memory
1277844		zjs	Bank (IZhO14_bank)	C++20	71 / 100	1096 ms	8628 KiB

bank

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

int main() {
    int n, m;
    cin >> n >> m;
    vector<int> a(n), b(m);
    for (int i = 0; i < n; i++)
        cin >> a[i];
    for (int i = 0; i < m; i++)
        cin >> b[i];
    vector<int> f(1 << m);
    
    vector<int> v(1 << m);
    for (int s = 0; s < (1 << m); s++) {
        for (int i = 0; i < m; i++)
            if (s >> i & 1)
                v[s] += b[i];
    }

    f[0] = true;
    int sum = 0;
    for (int x : a) {
        sum += x;
        for (int s = (1 << m) - 1; s >= 0; s--) {
            f[s] = false;
            if (v[s] != sum) continue;
            for (int t = s; t > 0; t = (t - 1) & s) {
                if (v[t] == x && f[s ^ t]) {
                    f[s] = true;
                    break; 
                }
            }
        }
    }
    for (int s = 0; s < 1 << m; s++)
        if (f[s]) {
            cout << "YES\n";
            return 0;
        }
    cout << "NO\n";
}

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