Arean Code

#include<bits/stdc++.h>
using namespace std;
typedef unsigned int ui;

int main()
{
    ui b;
    while(1)
    {
        cin>>b;
        if(b==0) break;
        ui count = sqrt(b);
        ui vog = b-count*count;
        vog==0 ? cout<<"yes\n" : cout<<"no\n";
    }
}