using System;

public class Program

{

    public static void Main()

    {

        int num , sum , y ;

        Console.WriteLine("the value of num is ");

        num = int.Parse(Console.ReadLine());

        while (num != 0)

        {

        sum = (num % 10) + (num / 10);

        y = sum * sum ;

        if (y == num)

        {

        Console.WriteLine("pingo");

        }

        else 

        {

        Console.WriteLine("not pingo");

        }   

        Console.WriteLine("the value of num is ");

        num = int.Parse(Console.ReadLine());

    }

    }

}