#include <bits/stdc++.h>
using namespace std;
int main () {
	int T;
	cin >> T;
	while (T--) {
		int N;
		cin >> N;
		bool ok = true;
		for (int i = 0; i < N; i ++) {
			int a;
			cin >> a;
			ok = ok && a;
		}
		cout << (ok ? "Yes" : "No") << endl;
	}
}