using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hellow World ! ");

    Console.WriteLine("Nice to meet you! I am currently at a Wedding and i Am bored");

    Console.WriteLine("Would you be interested in a math game ?");

    string name; 

    name = Console.ReadLine();

    if (name == "Yes") {

Console.WriteLine("Nice ! Let's Continue then ! ");

    }   

    else if (name != "Yes) 

Console.WriteLine("oh, well then Thanks for stppping by !");

    }

    }

}