#include<iostream>
#include<cmath>
#include<cstdio>
#include<cstring>
#include<string>
#include<algorithm>
using namespace std;
int t;
int main(){
//	freopen("7.in","r",stdin);
//	freopen("7.out","w",strout);
	scanf("%d",&t);
	for(int i=1;i<=t;i++){
		int n,u=0;
		scanf("%d",&n);
		for(int j=1;j<=n;j++){
			int a;
			scanf("%d",&a);
			if(a==0){
				printf("yes\n");
				u=1;
				break;
			}
		}
		if(u==0) printf("no");
	}
	return 0;
}

评测结果