Submission #367260

#	Time	Username	Problem	Language	Result	Execution time	Memory
367260		schiftyfive4	Bank (IZhO14_bank)	C++14	100 / 100	249 ms	94956 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), pre(n);
    for (int i = 0; i < n; i++) {
        std::cin >> a[i];
        pre[i] = a[i];
        if (i > 0)
            pre[i] += pre[i - 1];
    }
    std::vector<int> b(m);
    for (int i = 0; i < m; i++) {
        std::cin >> b[i];
    }
    std::vector<int> sum(1 << m);
    for (int mask = 0; mask < (1 << m); mask++) {
        for (int j = 0; j < m; j++) {
            if (mask & (1 << j))
                sum[mask] += b[j];
        }
    }
    std::vector<std::vector<int>> dp(n + 1, std::vector<int>(1 << m));
    dp[0][0] = 1;
    for (int i = 0; i <= n; i++) {
        for (int mask = 0; mask < (1 << m); mask++) {
            if (dp[i][mask] == 0)
                continue;
            if (i == n) {
                std::cout << "YES\n";
                return 0;
            }
            for (int j = 0; j < m; j++) {
                if (!(mask & (1 << j))) {
                    if (sum[mask] + b[j] == pre[i])
                        dp[i + 1][mask ^ (1 << j)] = 1;
                    if (sum[mask] + b[j] < pre[i])
                        dp[i][mask ^ (1 << j)] = 1;
                }
            }
        }
    }
    std::cout << "NO\n";
}

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