using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(Convert12Digits("111588201"));

    }

    public static string Convert12Digits(string cardNumber)

        {

            string lastdigit = cardNumber.Substring(cardNumber.Length - 1);

            string removeLast = cardNumber.Remove(cardNumber.Length - 1, 1);

            cardNumber = "10" + removeLast + "0" + lastdigit;

            return cardNumber;

        }

}