Submission #1098173

#	Time	Username	Problem	Language	Result	Execution time	Memory
1098173		vjudge1	Bank (IZhO14_bank)	C++17	44 / 100	1097 ms	49656 KiB

bank

//UNSTOPPABLE
#include "bits/stdc++.h"
using namespace std;
int n,m,a[20],b[20],used[20];
set <int> g[1001];
void rec(int mask){
	bool ok = 0;
	for(int i = 0 ; i < n ; i++){
		if(!used[i]){
			ok = 1;
			break;
		}
	}
	if(!ok){
		cout << "YES";
		exit(0);
	}
	for(int i = 0 ; i < n ; i++){
		if(used[i]) continue;
		for(auto it : g[a[i]]){
			if((mask & it)){
				continue;
			}
			used[i] = 1;
			rec((mask | it));
			used[i] = 0;
		}
	}
}
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin >> n >> m;
	for(int i = 0 ; i < n ; i++){
		cin >> a[i];
	}
	for(int i = 0 ; i < m ; i++){
		cin >> b[i];
	}
	for(int mask = 0 ; mask < (1 << m) ; mask++){
		int sum = 0;
		for(int i = 0 ; i < m ; i++){
			if(((mask >> i) & 1)){
				sum += b[i];
			}
		}
		if(sum <= 1000){
			g[sum].insert(mask);
		}
	}
	rec(0);
	cout << "NO\n";
}

• Subtask 1: 19 / 19
• Subtask 2: 25 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29