Submission #737849

#	Time	Username	Problem	Language	Result	Execution time	Memory
737849		bane	Bank (IZhO14_bank)	C++17	100 / 100	125 ms	8524 KiB

bank

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

#ifdef LOCAL
#define debug(x) cout << (#x) << " is " << (x) << '\n'
#else
#define debug(x) 42
#endif

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n, m;
	cin >> n >> m;
	vector<int>a(n), b(m);
	for (int i = 0; i < n; i++)cin >> a[i];
	for (int j = 0; j < m; j++)cin >> b[j];
	int f[(1 << m)], p[(1 << m)];
	memset(f, -1, sizeof(f));
	memset(p, -1, sizeof(p));
	bool ok = 0;
	f[0] = p[0] = 0;
	for (int mask = 0; mask < (1 << m); mask++){
		for (int last = 0; last < m; last++){
			if (!((1 << last) & mask))continue;
			int previous = mask ^ (1 << last);
			if (p[previous] == -1)continue;
			int man = p[previous];
			int money = f[previous] + b[last];
			if (money < a[man]){
				f[mask] = f[previous] + b[last];
				p[mask] = man;
			}
			if (money == a[man]){
				f[mask] = 0;
				p[mask] = man + 1;
				ok|=(man == n-1);
			}
		}
	}
	cout<<(ok?"YES":"NO");
	return 0;
}

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