Submission #994027

#	Time	Username	Problem	Language	Result	Execution time	Memory
994027		kchaitanya06	Bank (IZhO14_bank)	C++14	100 / 100	87 ms	8792 KiB

bank

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

void solve() {
	int n, m;
	cin >> n >> m;
	vector<int> people(n);
	for (int &p : people) cin >> p;
	vector<int> bank_notes(m);
	for (int &b : bank_notes) cin >> b;
	vector<int> left_over(1 << m, -1);
	vector<int> people_covered(1 << m, -1);
	left_over[0] = 0;
	people_covered[0] = 0;
	for (int mask = 1; mask < 1 << m; mask++) {
		for (int j = 0; j < m; j++) {
			if (mask & 1 << j && people_covered[mask ^ (1 << j)] != -1) {
				int rem = left_over[mask ^ (1 << j)] + bank_notes[j];
				int people_ind = people_covered[mask ^ (1 << j)];
				if (rem < people[people_ind]) {
					left_over[mask] = rem;
					people_covered[mask] = people_covered[mask ^ (1 << j)];
				} else if (rem == people[people_ind]) {
					left_over[mask] = 0;
					people_covered[mask] = people_covered[mask ^ (1 << j)] + 1;
				}
			}
		}
		if (people_covered[mask] == n) {
			cout << "YES" << endl;
			return;
		}
	}
	cout << "NO" << endl;
}

int main() {
	solve();
	return 0;
}

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