#include <iostream>

using namespace std;

class Punkt{
	public:
		double x;
		double y;
};

class Wektor{
	private:
		double x;
		double y;

		Punkt s,k;

	public:
	friend ostream & operator << ( ostream &os, const Wektor &w);

	Wektor (double x , double y , Punkt s){
		setX(x);
		setY(y);
		setS(s);
		obliczK();
	}

	Wektor() {
		this->x=0;
		this->y=0;
		this->s.x=0;
		this->s.y=0;
		obliczK();
	}

	Wektor (const Wektor &w){
		this->x=w.x;
		this->y=w.y;
		this->s=w.s;
		this->k=w.k;
		obliczK();
	}

	void setX(int x){
		this->x=x;
	}
	void setY(int y){
		this->y=y;
	}
	void setS(Punkt s){
		this->s=s;
	}
	double getY(){
		return y;
	}
	double getX(){
		return x;
	}
	Punkt getS(){
		return s;
	}
	Punkt getK(){
		return k;
	}

	void obliczK(){
		Punkt k;
		this->k=k;
		this->k.x=this->s.x + this->x;
		this->k.y=this->s.y + this->y;
	}
	void show(){
		cout<<"Wektor o poczatku w punkcie P["<<this->s.x<<","<<this->s.y<<"] i o kierunku x="<<getX()<<", y="<<getY()<<endl;
	}
	void toString(){
		cout<<"Wektor o poczatku w punkcie P["<<this->s.x<<","<<this->s.y<<"] i o kierunku x="<<getX()<<", y="<<getY()<<endl;
	}

	Wektor operator + (const  Wektor &w){
		Wektor tmp(x+w.x,y+w.y,s);
		return tmp;
	}

	Wektor operator - (void){
		Wektor tmp(-x , -y, s);
		return tmp;
	}

};

int main(){
	Punkt pktS;
	pktS.x = 1;
	pktS.y = 2;
	Wektor wek(2 , 3, pktS);
	Wektor wek1(wek);
	Wektor wek2;

	wek.show();
	wek1.show();
	wek2.show();
	Wektor wek3;
	wek3 = wek2 + wek;
	wek3.toString();
	wek3 = -wek3;
	wek3.toString();

}