using namespace std;
int a[100000];
int main(){
	int n,t,i,j,c;
	cin>>t;
	for(i=0;i<t;i++){
		cin>>n;
		c=0;
		for(j=0;j<n;j++){
			cin>>a[i];
			if(a[i]==0){
				c++;
			}
		}
		n-=c;
		if(n%2==0){
			cout<<"No"<<endl;
		}else{
			cout<<"Yes"<<endl;
		}
	} 
    return 0;
}