using System;

​

public class Program

{

    public static void Main()

    {

        int x = 0;

        Console.WriteLine("Type in a number between 100 and 1000:");

        x = int.Parse(Console.ReadLine()); //444

        int z = x / 100; //4

        int r = x / 10; //44

        int a = r / 10; //4

        int w = r - z; //40

        int y = x - z * 100 - w; //4 

        if ((x >= 100) && (x < 1000))

        {

            if ((z == a) && (z == y))

            {

                Console.WriteLine("Lucky Number!");

            }

            else

            {

                Console.WriteLine("Not A Lucky Number");

            }

        }

        else

        {

            Console.WriteLine("Error");

        }

    }

}