perfectSquare

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

#define endl '\n'
#define optimize() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define fraction() cout.unsetf(ios::floatfield); cout.precision(10); cout.setf(ios::fixed,ios::floatfield);

map<long long, bool> isPerSqr;

int main()
{
    optimize();

    int lim = 32e4;
    for ( int i = 1; i <= lim; i++ ) {
        isPerSqr[1LL*i*i] = 1;
    }

    int T;
    cin >> T;
    while(T--) {
        long long n;
        cin >> n;
        if ( isPerSqr[n] ) cout << "YES\n";
        else cout << "NO\n";
    }



    return 0;
}