Submission #366737

#	Time	Username	Problem	Language	Result	Execution time	Memory
366737		schiftyfive4	Bank (IZhO14_bank)	C++14	100 / 100	231 ms	4588 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), b(m), 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];
    }
    for (int i = 0; i < m; i++) {
        std::cin >> b[i];
    }
    std::vector<int> dp(1 << m);
    dp[0] = 1;
    for (int mask = 0; mask < (1 << m); mask++) {
        if (dp[mask] == 0)
            continue;
        int sum = 0;
        for (int i = 0; i < m; i++) {
            if (mask & (1 << i))
                sum += b[i];
        }
        int idx = 0;
        while (idx < n && pre[idx] <= sum)
            ++idx;
        if (idx == n) {
            std::cout << "YES\n";
            return 0;
        }
        for (int i = 0; i < m; i++) {
            if (!(mask & (1 << i)) && sum + b[i] <= pre[idx])
                dp[mask ^ (1 << i)] = 1;
        }
    }
    std::cout << "NO";
}

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