Submission #493518

#	Time	Username	Problem	Language	Result	Execution time	Memory
493518		Christopher_	Bank (IZhO14_bank)	C++17	100 / 100	115 ms	8592 KiB

bank

#include <bits/stdc++.h>

using namespace std;

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n, m;
	cin >> n >> m;
	vector<int> p(n), b(m);
	for (int i = 0; i < n; ++i) {
		cin >> p[i];
	}
	for (int i = 0; i < m; ++i) {
		cin >> b[i];
	}
	vector<int> dp((1 << m), -1), left((1 << m), -1);
	dp[0] = left[0] = 0;
	for (int s = 0; s < (1 << m); ++s) {
		for (int last = 0; last < m; ++last) {
			if ((s & (1 << last)) == 0) {
				continue;
			}
			int prev = s & ~(1 << last);
			if (dp[prev] == -1) {
				continue;
			}

			int money = left[prev] + b[last];
			int cur = p[dp[prev]];
			if (cur > money) {
				left[s] = money;
				dp[s] = dp[prev];
			} else if (cur == money) {
				left[s] = 0;
				dp[s] = dp[prev] + 1;
			}
		}
		if (dp[s] == n) {
			cout << "YES\n";
			return 0;
		}
	}
	cout << "NO\n";
}

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