Submission #854864

#	Time	Username	Problem	Language	Result	Execution time	Memory
854864		stdfloat	Bank (IZhO14_bank)	C++17	100 / 100	886 ms	3280 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