static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
            Human   guy   = new Human("Guy");
            Wizard  wiz   = new Wizard("Wiz");
            Ninja   ninja = new Ninja("Ninja");
            Samurai sam   = new Samurai("Sam");


            wiz.Attack(guy);
            wiz.Heal(guy);
            wiz.Heal(guy);
            wiz.Heal(guy);

            ninja.Attack(guy);
            ninja.Attack(guy);
            ninja.Attack(guy);
            ninja.Attack(guy);
            ninja.Attack(guy);

            sam.Attack(wiz);
            sam.Attack(wiz);
        }
        static void Main(string[] args)
        {
            Human   me      = new Human("Kevin");
            Wizard  wizard  = new Wizard("Gandalf");
            Ninja   ninja   = new Ninja("Ralph");
            Samurai samurai = new Samurai("Sam");

            wizard.Attack(me);
            wizard.Heal(me);
            ninja.Attack(wizard);
            ninja.Steal(wizard);
            samurai.Attack(ninja);
            samurai.Meditate();
        }