class Rec{
	Rec();
	Rec(double, double);
	Rec(const Rec &);
	~rRec();
	Rec& operator = (const Rec&);
	bool operator < (const Rec&);
 
	double getA() const;
	double getB() const;
 
	void setA (double);
	void setB (double);
	double s()const;
	void print () const;
 
private:
	double a,b;
};
 
 
 
	 class Sq: private Rec{
 
		 Sq():Rec(1.0, 1.0){}
		 Sq(double p):Rec(p,p){}
		 Sq (const Sq& p):Rec(p.getX(), p.getX()) {}
		 ~Sq(){};
 
		 Sq& operator = (const Sq& p){
			 setA(p.getX());
			 setB(p.getX());
			 return *this;
		 }
 
		 double getX() const {return getA();}
		 double setX(double {setA(p); setB(p);}
	 };