
using System;

namespace tstruct
{
	class Program
	{
		struct Dog {
			public int hp;
			public int atk;
			public bool IsDead()
			{
				return hp<=0;
			}
		}

		static void PrintHP(Dog d) 
		{
			Console.WriteLine("hp: {0}", d.hp);
		}

		static void Attack(Dog attacker,
		                   ref Dog defender) 
		{
			if(attacker.hp<=0)
				return;
			
			if(defender.hp > attacker.atk)
				defender.hp -= attacker.atk;
			else
				defender.hp = 0;
		}

		static void SupAttack(Dog attacker,
		                      Dog [] dogs)
		{
			for(int i=0; i