using System;

public class Program

{

    public static void Main()

    {

        int num , sum;

        Console.WriteLine("enter number");

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

        sum=0;

        while(num>0)

        {

            sum=sum+num%10;

            num=num/10;

        }

        Console.WriteLine("sum digits="+ (sum+num));

    }

}