using System;

public class Program

{

    public static void Main()

    {

        int n,temp;

        int sum=0;

        Console.WriteLine("Perfect Number");

        Console.WriteLine("enter your Number");

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

        temp = n;

        for(int i=1; i<n; i++)

        {

            if(temp % i==0)

            {

                sum = sum + i;

            }

        }

        if ( sum == temp )

        {

            Console.WriteLine("the number is a Perfct Number");

        }

        else

        {

            Console.WriteLine("the number is Not a Perfect Number");

        }

    }

}