using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication19
{
    class Program
    {
        static void Main(string[] args)
        {
            int num, dig, original, numdig;
            bool a = false;
            Console.WriteLine("Please enter a number: ");
            num = int.Parse(Console.ReadLine());
            Console.WriteLine("Please enter one digit: ");
            dig = int.Parse(Console.ReadLine());
            original = num;
            while (num > 0 && a == false)
            {
                numdig = num % 10;
                num /= 10;
                if (numdig == dig)
                    a = true;
            }
            if (a == true)
                Console.WriteLine((original * 10 + dig));
        }
    }
}