using System;

public class Program

{

    public static void Main()

    {

            int num,sum=0,n;

            Console.WriteLine("Perfect Number");

            Console.WriteLine("enter the Number");

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

            n = num;

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

            {

                if (num % i == 0)

                {

                    sum=sum + i;

                }

            }

                if (sum == n)

                {

                    Console.WriteLine("\n Entered number is a perfect number");

                    Console.ReadLine();

                }

                else

                {

                    Console.WriteLine("\n Entered number is not a perfect number");

                    Console.ReadLine();

                } 

    }

}