using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter a seven digit number");

        //Assign a string to what the user entered

        string userInput = Console.ReadLine();

        Console.WriteLine(string.Format("Thank you, you entered {0}", userInput));

        //Try to convert the value to an integer

        Int32 nbr = new Int32();

        if(Int32.TryParse(userInput, out nbr))

        {

            //If modulus (remainder of division is zero then 11 is a factor of the number)

            if(nbr % 11 == 0)

            {

                Console.WriteLine("Congratulations, your number is divisible by 11");

            }

            else

            {

                Console.WriteLine(string.Format("{0} is not divisible by 11", userInput));

            }

        }

    }

}