using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Open the door:");

        Console.Write("choose a key -1, 2, and 3: ");

        string UserKey = Console.ReadLine();

        if (UserKey == "1")

        {

            string message = " you won 3 grams gold ";

            Console.WriteLine(message);

        }

        else if (UserKey == "2")

        {

          string message = " you won a car ";

          Console.WriteLine(message);

        }   

         else if (UserKey == "3")

         {

          string message = "Better luck next time";

          Console.WriteLine(message);   

         }

        else 

        {

          string message = "sorry , key doesn't exist";

          Console.WriteLine(message);

        }

        Console.ReadLine();

    }

}