#include<bits/stdc++.h>
using namespace std;
int t,k,n,p;
int main(){
	cin>>t;
	for(int i=1;i<=t;i++){
		p=0;
		cin>>n;
		for(int j=1;j<=n;j++){
			cin>>k;
			if(k==0){
				cout<<"yes"<<endl;
				p=1;
				break;
			}
		}
		if(p==0){
			cout<<"no"<<endl;
		}
	}
}