using System;

public class Program

{

    public static void Main()

    {

        int  Rd;

        Console.WriteLine("enter the number");

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

        int r1=Rd/1000;

        int r2=(Rd/10)%10;

        int r3=(Rd%100)/10;

        int r4=Rd%10;

        int Dr=r1+r2+r3+r4;

        Console.WriteLine("the Rd is {0}",Rd);

    }

}