#include<bits/stdc++.h>
using namespace std;
int main(){
long long t,n,x;
scanf("%d",&t);
bool f=0;
for(long long i=1;i<=t;i++){
scanf("%d",&n);
for(long long j=1;j<=n;j++){
scanf("%d",&x);
if(x==0){
f=1;
break;
}
}
if(f==0){
cout<<"no"<<"\n";
}
else if(f==1){
cout<<"yes"<<"\n";
}
}
}
