#include <iostream.h>

class one
{
public:
	void number(void) {cout<<"Number one\n";}
};

class two:public one
{
public:
	void number(void) {cout<<"Number two\n";}
};

class three:public one
{
public:
	void number(void) {cout<<"Number three\n";}

};

class four:public one
{
int dd;
};

int main()
{
one *a;
	a=new one;
	a->number();
	delete a;

	a=new two;
	a->number();
	delete a;

	a=new three;
	a->number();
	delete a;

	a=new four;
	a->number();
	delete a;

	return 0;




}