using System;

​

namespace Learning

{

    public class Abhishek

    {

        public static void Main(string[] args)

        {

            int inputNum;

            Console.WriteLine("Please enter a number whose sum of digits you want");

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

            while(inputNum%10 == 0)

            {

            }

        }

    }

}