পূর্ণবর্গ সংখ্যা
problem link ::http://cpbook.subeen.com/2012/11/square-number.html
soliution::
#include<iostream>
#include<cmath>
using namespace std;
int main()
{
long long int a,t,b;
cin>>t;
for(int i=0;i<t;i++)
{
cin>>a;
b=sqrt(a);
if((b*b)==a)
cout<<"YES"<<endl;
else
cout<<"NO"<<endl;
}
return 0;
}
//you can use printf instead of cout && scanf instead of cin.
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