#include <iostream>
#include <vector>
#include <algorithm>
#include <array>
#include <iterator>
#include <string>
#include <cctype>
#include <cstring>
#include <cstdlib>
#include <cassert>
#include <cmath>
#include <ctime>
#include <iomanip>
#include <numeric>
#include <stack>
#include <queue>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <bitset>
#include <random>
#include <utility>
#include <functional>
using namespace std;
template<class T = long long>
T gcd(T a,T b)
{
	while(b)
	{
		a %= b;
		swap(a,b);
	}
	return a;
}

template<class T = long long>
T lcm(T a,T b)
{
	return a / gcd<T>(a,b) * b;
}

void Main()
{
	int N;
	cin >> N;
	vector<long long> A(N);
	for(int i = 0;i < N;i++)
	{
		cin >> A[i];
	}
	for(int i = 0;i < N;i++)
	{
		for(int j = i + 1;j < N;j++)
		{
			long long g = gcd(A[i],A[j]);
			A[i] /= g;
			A[j] /= g;
		}
	}
	sort(A.begin(),A.end());
	auto sq = [](long long x) -> bool
	{
		long long ok = 0,ng = (long long)1e9 + 1;
		while(ng - ok > 1)
		{
			long long mid = (ok + ng) / 2;
			if(mid * mid <= x)
			{
				ok = mid;
			}
			else
			{
				ng = mid;
			}
		}
		return ok * ok == x;
	};
	for(int i = 0;i < N;)
	{
		int j = i;
		while(j < N && A[j] == A[i])
		{
			j++;
		}
		if(!sq(A[i]) && (j - i) & 1)
		{
			cout << "No\n";
			return;
		}
		i = j;
	}
	cout << "Yes\n";
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int tt = 1;
	cin >> tt;
	while(tt--) Main();
}