Submission #1136367

#	Time	Username	Problem	Language	Result	Execution time	Memory
1136367		classic	Bank (IZhO14_bank)	C++20	100 / 100	97 ms	8520 KiB

bank

// mode: short code
/*
practicing..
*/
#include<bits/stdc++.h>

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);

    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<std::pair<int, int>> dp(1 << m, {-1, -1});
    dp[0] = {0, 0};
    for (int i = 1; i < (1 << m); i++) {
        for (int j = 0; j < m; j++) {
            if (!(i & (1 << j))) {
                continue;
            }

            int p = (i ^ (1 << j));
            if (dp[p].first == -1) {
                continue;
            }

            if (dp[p].second + b[j] == a[dp[p].first]) {
                dp[i] = std::max(dp[i], {dp[p].first + 1, 0});
            } else {
                dp[i] = std::max(dp[i], {dp[p].first, dp[p].second + b[j]});
            }
        }

        if (dp[i].first == n) {
            std::cout << "YES";
            return 0;
        }
    }

    std::cout << "NO";
    return 0;
}

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