using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello D!");

        Console.WriteLine("Still love me?");

        var input = "";

        while (input == ""){

            input = Console.ReadLine().ToLower();

            if (input.StartsWith("y"))

            {

                Console.WriteLine("YAY!");

            } 

            else if (input.StartsWith("n"))

            {

                Console.WriteLine(":(");

            } 

            else

            {

                input = "";

            }

        }

    }

}