#include<bits/stdc++.h>
using namespace std;
#define _ ios_base::sync_with_stdio(false);cin.tie(0);
#define ll long long int
#define SET(a,b) (memset(a,b,sizeof(a)))
#define REP(i,a,b) for(int i = int(a);i<=int(b);i++)
#define mp make_pair
typedef pair<int,int> ii;
int main(){
_
ll t;
cin>>t;
while(t--){
ll n,c=0;
cin>>n;
while(n--){
ll a;
cin>>a;
if(a!=0 && a!=1)
c++;
}
if(c<2)
cout<<"yes"<<endl;
else
cout<<"no"<<endl;
}
return 0;
}
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