#include<iostream>
#include<stdio.h>
#include<vector>
using namespace std;
//class Client{
//public:
//	Client(){}
//	~Client(){}
//};
class Visitor{
	virtual void visit(class ConcreteElementA elementA) = 0;
	virtual void visit(class ConcreteElementB elementB) = 0;
};
class ConcreteVisitor1 :public Visitor{
	//void visit(ConcreteElementA element);
	//void visit(ConcreteElementB element);
};
class ConcreteVisitor2 :public Visitor{
	//void visit(ConcreteElementA element);
	//void visit(ConcreteElementB element);
};
class Element{

	virtual void accept(Visitor* visitor) = 0;

};
class ConcreteElementA :public Element{
	//void accept(Visitor* visitor);
};
class ConcreteElementB :public Element{
	vector <class ObjectStructure*> objects;
	//void accept(Visitor* visitor);
};
class ObjectStructure{};



void main()
{

}