Submission #1224387

#	Time	Username	Problem	Language	Result	Execution time	Memory
1224387		vipul	Bank (IZhO14_bank)	C++20	100 / 100	911 ms	3212 KiB

bank

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

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

    int n, m;
    cin >> n >> m;
    vector<int> a(n + 1), p(n + 1);
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        p[i] = p[i - 1] + a[i];
    }

    vector<int> b(m);
    for (auto &i : b) cin >> i;

    vector<vector<bool>> dp(n + 1, vector<bool>(1 << m));
    for (int j = 0; j < (1 << m); j++)
        dp[0][j] = true;

    for (int j = 0; j < (1 << m); j++) {
        int sm = 0;
        for (int i = 0; i < m; i++) {
            if ((j >> i) & 1) sm += b[i];
        }
        for (int i = 1; i <= n; i++) {
            if (sm == p[i] && dp[i - 1][j]) dp[i][j] = true;
            for (int k = 0; k < m; k++) {
                if (((j >> k) & 1) && dp[i][j - (1 << k)]) dp[i][j] = true;
            }
        }
    }

    cout << (count(dp[n].begin(), dp[n].end(), true) ? "YES" : "NO");
}

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