// #define _GLIBCXX_DEBUG 
#include<bits/stdc++.h>
using namespace std;

using uint = unsigned int;
using ll = long long;

#define CIN( LL , A ) LL A; cin >> A 
#define GETLINE( A ) string A; getline( cin , A ) 
#define GETLINE_SEPARATE( A , SEPARATOR ) string A; getline( cin , A , SEPARATOR ) 
#define UNTIE ios_base::sync_with_stdio( false ); cin.tie( nullptr ) 
#define FOR( VAR , INITIAL , FINAL_PLUS_ONE ) for( ll VAR = INITIAL ; VAR < FINAL_PLUS_ONE ; VAR ++ ) 
#define FOR_ITR( ARRAY , ITR , END ) for( auto ITR = ARRAY .begin() , END = ARRAY .end() ; ITR != END ; ITR ++ ) 
#define REPEAT( HOW_MANY_TIMES ) FOR( VARIABLE_FOR_REPEAT , 0 , HOW_MANY_TIMES ) 
#define RETURN( ANSWER ) cout << ( ANSWER ) << endl; return 0 
#define DOUBLE( PRECISION , ANSWER ) cout << fixed << setprecision( PRECISION ) << ( ANSWER ) << endl; return 0 
#define MIN( A , B ) A < B ? A : B;
#define MAX( A , B ) A < B ? B : A;

template <typename T> inline T Absolute( const T& a ){ return a > 0 ? a : - a; }

int main()
{
  CIN( ll , T );
  REPEAT( T ){
    CIN( ll , N );
    list<ll> coprime{};
    FOR( i , 0 , N ){
      CIN( ll , Ai );
      auto itr = coprime.begin() , end = coprime.end();
      while( itr != end ){
	ll& coprime_j = *itr;
	ll coprime_j_c = coprime_j;
	ll Ai_c = Ai;
	while( coprime_j_c > 0 && Ai_c > 0 ){
	  if( coprime_j_c < Ai_c ){
	    Ai_c -= coprime_j_c * ( Ai_c / coprime_j_c );
	  } else {
	    coprime_j_c -= Ai_c * ( coprime_j_c / Ai_c );
	  }
	}
	ll gcd = coprime_j_c + Ai_c;
	coprime_j /= gcd;
	Ai /= gcd; 
	if( coprime_j == 1 ){
	  itr = coprime.erase( itr );
	} else {
	  itr++;
	}
      }
      if( Ai != 1 ){
	coprime.push_back( Ai );
      }
    }
    bool square = true;
    FOR_ITR( coprime , itr , end ){
      ll& Ai = *itr;
      ll sqrt = 0;
      ll power = 1;
      while( power * power < Ai ){
	power *= 2;
      }
      while( power != 0 ){
	ll sqrt_new = sqrt + power;
	ll sqrt_new_sq = sqrt_new * sqrt_new;
	while( sqrt_new_sq > Ai ){
	  power /= 2;
	  sqrt_new = sqrt + power;
	  sqrt_new_sq = sqrt_new * sqrt_new;
	}
	if( sqrt_new_sq == Ai ){
	  break;
	} else {
	  sqrt = sqrt_new;
	  power /= 2;
	}
      }
      if( power == 0 ){
	square = false;
	break;
      }
    }
    cout << ( square ? "Yes" : "No" ) << endl;
  }
  return 0;
}