egn

using System;

class Program
{
    static void Main()
    {


        long result = 0;
        bool isTrue = true;

        while (isTrue)
        {
            string input = Console.ReadLine();

            result = long.Parse(input);
                Console.WriteLine(result);

            long firstNum = (result / 1000000000);
            long secondNum = (result / 100000000) % 10;
            long thirdNum = (result / 10000000) % 10;
            long fourthNum = (result / 1000000) % 10;
            long fifthNum = (result / 100000) % 10;
            long sixthNum = (result / 10000) % 10;
            long seventhNum = (result / 1000) % 10;
            long eighthNum = (result / 100) % 10;
            long ninethNum = (result / 10) % 10;
            long tenthNum = result % 10;

            long resultOfTenthNumber = (firstNum * 2) + (secondNum * 4) + (thirdNum * 8) + (fourthNum * 5) + (fifthNum * 10) + (sixthNum * 9) + (seventhNum * 7) + (eighthNum * 3) + (ninethNum * 6);

            long tenthNumResult = resultOfTenthNumber % 11;

            if ((result.ToString().Length == 10) && (tenthNumResult == tenthNum))
            {
                Console.WriteLine("The egn is correct");
                isTrue = false;
            }
            else
            {
                Console.WriteLine("incorrect, try again");
                isTrue = true;
            }

        }


    }
}