Submission #1098180

#	Time	Username	Problem	Language	Result	Execution time	Memory
1098180		vjudge1	Bank (IZhO14_bank)	C++17	100 / 100	562 ms	135760 KiB

bank

//UNSTOPPABLE
#include "bits/stdc++.h"
using namespace std;
int n,m,a[20],b[20],used[(1 << 20) + 1][21];
set <int> g[1001];
void rec(int mask , int i){
	if(used[mask][i]) return;
	used[mask][i] = 1;
	if(i == n){
		cout << "YES\n";
		exit(0);
	}
	for(auto it : g[a[i]]){
		if((mask & it) || ((mask | it) == (1 << m) - 1 && i != n - 1)){
			continue;
		}
		rec((mask | it) , i + 1);
	}
}
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 , 0);
	cout << "NO\n";
}

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