Submission #595884

#	Time	Username	Problem	Language	Result	Execution time	Memory
595884		Belphegor	Bank (IZhO14_bank)	C++14	71 / 100	1056 ms	24928 KiB

bank

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int n,m;
int A[22],B[22];
short sum[(1<<20)];
char dp[22][(1<<20)];
char f(int cur,int state){
	char&ret = dp[cur][state];
	if(~ret) return ret;
	ret = 0;
	if(cur==n) return ret = 1;
	for(int s = state; s; s = (s-1)&state){
		if(sum[s]==A[cur]) ret|=f(cur+1,state^s);
	}
	return ret;
}
int main(){
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	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 i=1; i<(1<<m); i++){
		int tot = 0;
		for(int j=0; j<m; j++) if(i&(1<<j)) tot+=B[j];
		sum[i] = tot;
	}
	memset(dp,-1,sizeof(dp));
	cout<<(f(0,(1<<m)-1)?"YES":"NO");
}

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