using System;

namespace EnderDeath
{
    class EnderCat : Entity
    {
        public void Meow()
        {
            Console.WriteLine("M. EOW.");
        }

        public override void Damage(int dam)
        {
            base.Damage(dam);
            Meow();
        }

        public override void Kick()
        {
            Damage(1);
        }
    }

    class Entity
    {
        public int Health = 100;
        public bool IsAlive = true;

        public virtual void Damage(int dam)
        {
            if(Health < 1)
                throw new RuntimeException("You cannot kill dead entities.");

            Health -= dam;

            if(Health < 0)
            {
                Health = 0
                IsAlive = false;
            }
        }
    }

    public class Program
    {
        public static void Main(string[] args)
        {
            EnderCat EvilKitteh = new EnderCat();
            for(int i=100;i > 5;i++)
            {
                EvilKitteh.Kick();
            }
            Console.WriteLine("Shaddap ya darn cat!");
        }
    }
}