Submission #1175470

#	Time	Username	Problem	Language	Result	Execution time	Memory
1175470		bangan	Bank (IZhO14_bank)	C++20	100 / 100	91 ms	8520 KiB

bank

#include <bits/stdc++.h>

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int n, m;
    std::cin >> n >> m;

    std::vector<int> a(n);
    for (int i = 0; i < n; i++) {
        std::cin >> a[i];
    }

    std::vector<int> b(m);
    for (int i = 0; i < m; i++) {
        std::cin >> b[i];
    }

    std::vector<int> f(1 << m, -1), g(1 << m);
    for (int msk = 1; msk < (1 << m); msk++) {
        for (int i = 0; i < m; i++) {
            if (msk >> i & 1) {
                int nxt = f[msk ^ (1 << i)] + 1;
                if (nxt < n && g[msk ^ (1 << i)] + b[i] == a[nxt] && nxt >= f[msk]) {
                    f[msk] = nxt;
                    g[msk] = 0;
                } else if (nxt - 1 >= f[msk]) {
                    f[msk] = nxt - 1;
                    g[msk] = g[msk ^ (1 << i)] + b[i];
                }
            }
        }
    }

    if (f[(1 << m) - 1] == n - 1) {
        std::cout << "YES";
    } else {
        std::cout << "NO";
    }

    return 0;
}

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