#pragma once

#include <iostream>
#include <cstdlib>
#include <ctime>

class Base {
	public:
		virtual ~Base();
		static Base *generate();
		static void identify(Base *p);
		static void identify(Base &p);
};

class A : public Base {
	public:
		~A();
};

class B : public Base {
	public:
		~B();
};

class C : public Base {
	public:
		~C();
};