using System;

public class Program

{

    public static bool a 

    {

        get 

        {

            Console.WriteLine("a");

            return false;

        }

    }

    public static bool b

    {

        get

        {

            Console.WriteLine("b");

            return true;

        }

    }

    public static bool c

    {

        get

        {

            Console.WriteLine("c");

            return true;

        }

    }

    public static void Main()

    {

        if (a && b || c)

        {

            Console.WriteLine("Hello World");

        }

    }

}