#include
#include
using?namespace?std;
class?Shape
{
public?:
	virtual?void?draw（）{
	cout<<“drow?Shape!“<	}
};
class?Point
{
public:
	double?x;
	double?y;
};
class?Triangle:public?Shape
{
public:
	Point?a;
	Point?b;
	Point?c;
	void?draw（）{
	cout<<“Triangle!“<	cout<<“（“<	cout<<“（“<	cout<<“（“<};
class?Square:public?Shape
{
public:
	Point?v1;
	double?width;
	void?draw（）{
	cout<<“Square!“<	};
};
class?Rectangle:public?Shape
{
public:
	Point?a;
	Point?b;
	double?width;
	double?height;
	void?draw（）{
	cout<<“Rectangle!“<	};
};
class?Graphics:public?Shape
{
public?:
	vector?shapes;
	void?add（Shape?*shape）{
		shapes.push_back（shape）;
	};
	void?draw（）{
		for（int?i=0;i		{
			Shape?*shape=shapes[i];
			shape-