Submission #1277934

#	Time	Username	Problem	Language	Result	Execution time	Memory
1277934		zjs	Bank (IZhO14_bank)	C++20	100 / 100	77 ms	8632 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, -1);
    vector<int> leftover(1 << m, -1);



    f[0] = 0;
    leftover[0] = 0;
    for (int s = 1; s < 1 << m; s++) {
        for (int i = 0; i < m; i++) { //枚举哪一张纸币排在最后
            if (s >> i & 1) {
                int t = s ^ 1 << i;
                if (leftover[t] + b[i] == a[f[t]]) {
                    f[s] = f[t] + 1;
                    leftover[s] = 0;
                } else if (f[t] > f[s]) {
                    f[s] = f[t];
                    leftover[s] = leftover[t] + b[i];
                }
            }
        }

        if (f[s] == n) {
            cout << "YES\n";
            return 0;
        }
    }
    cout << "NO\n";
}

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