Submission #1093888

#	Time	Username	Problem	Language	Result	Execution time	Memory
1093888		ezGeometry	Bank (IZhO14_bank)	C++14	100 / 100	74 ms	8656 KiB

bank

#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main() {
	int n, m;
	cin >> n >> m;

	vector<int> sal(n);

	for (int i = 0; i < n; i++) {
		cin >> sal[i];
	}

	vector<int> bank(m);

	for (int j = 0; j < m; j++) {
		cin >> bank[j];
	}

	// dp on which bank notes we have used, <current user, amount money given>
	vector<pair<int, int>> dp(1 << m, make_pair(-1, 0));
	dp[0] = make_pair(0, 0);

	for (int i = 0; i < (1 << m); i++) {
		if (dp[i].first == -1) {
			continue;
		}
		if (dp[i].first == n) {
			cout << "YES\n";
			return 0;
		}
		for (int j = 0; j < m; j++) {
			if ((1 << j) & i) {
				continue;
			}

			pair<int, int> cur = dp[i];
			cur.second += bank[j];
			if (cur.second > sal[dp[i].first]) {
				continue;
			}
			if (cur.second == sal[dp[i].first]) {
				cur.first++;
				cur.second = 0;
			}

			dp[i ^ (1 << j)] = cur;
		}
	}

	cout << "NO\n";

	return 0;
}

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