Submission #595920

#TimeUsernameProblemLanguageResultExecution timeMemory
595920BelphegorBank (IZhO14_bank)C++14
100 / 100
600 ms22988 KiB
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int n,m;
vector<int>graph[22];
int A[22],B[22];
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 : graph[cur]){
		if((state&s)==s) 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];
		for(int j=0; j<n; j++) if(A[j]==tot) graph[j].emplace_back(i);
	}
	memset(dp,-1,sizeof(dp));
	cout<<(f(0,(1<<m)-1)?"YES":"NO");
}
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