Submission #493517

#	Time	Username	Problem	Language	Result	Execution time	Memory
493517		Christopher_	Bank (IZhO14_bank)	C++17	100 / 100	112 ms	8576 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 &e : p) {
		cin >> e;
	}
	for (int &e : b) {
		cin >> e;
	}

	vector<int> left((1 << m), -1), dp((1 << m), -1);
	left[0] = 0;
	dp[0] = 0;
	for (int mask = 0; mask < (1 << m); ++mask) {
		for (int last = 0; last < m; ++last) {
			if ((mask & (1 << last)) == 0) {
				continue;
			}
			int prev = mask & ~(1 << last);
			if (dp[prev] == -1) {
				continue;
			}

			int new_amt = left[prev] + b[last];
			int cur = p[dp[prev]];

			if (new_amt < cur) {
				dp[mask] = dp[prev];
				left[mask] = new_amt;
			} else if (new_amt == cur) {
				dp[mask] = dp[prev] + 1;
				left[mask] = 0;
			}
		}
		if (dp[mask] == 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