This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
#define ll long long
int main(){
ll n,m,a[21],b[21],i,j,k=1,r,t;
cin>>n>>m;
for(i=1;i<=n;i++){
cin>>a[i];
}
for(i=1;i<=m;i++){
k*=2;
cin>>b[i];
}
if(n==1){
for(i=1;i<k;i++){
r=i;
t=0;
for(j=1;j<=m;j++){
if(r%2==1){
t+=b[j];
}
r/=2;
}
if(t==a[1]){
cout<<"YES";
return 0;
}
}
cout<<"NO";
return 0;
}
}
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