#include <iostream>

using namespace std;

class Punkt
{
    friend ostream& operator<<(ostream&, const Punkt&);
    double X;
    double Y;
public:
    Punkt(double, double);
};

class Kwadrat
{
    friend Kwadrat operator+(const Kwadrat, const Kwadrat);
    friend Kwadrat operator-(const Kwadrat, const Kwadrat);
    friend ostream& operator<<(ostream&, const Kwadrat&);
    Punkt LewoGora;
    double Bok;
public:
    Kwadrat(Punkt, double);
};

Punkt::Punkt(double x, double y) : X(x), Y(y) {}

Kwadrat operator+(const Kwadrat A, const Kwadrat B)
{
    return Kwadrat(A.LewoGora, A.Bok + B.Bok);
}

Kwadrat operator-(const Kwadrat A, const Kwadrat B)
{
    double roznica = A.Bok - B.Bok;
    if(roznica < 0)
        roznica *= -1;
    return Kwadrat(B.LewoGora, roznica);
}

ostream& operator<<(ostream& os, const Punkt& p)
{
    os << '(' << p.X << ',' << p.Y << ')';
    return os;
}

ostream& operator<<(ostream& os, const Kwadrat& kw)
{
    os << "Kwadrat o lewym gornym boku " << kw.LewoGora << " i boku o dlugosci " << kw.Bok;
    return os;
}

Kwadrat::Kwadrat(Punkt p, double b) : LewoGora(p), Bok(b) {}

int main()
{
    Punkt A(3.2, 7.5);
    Punkt B(-1.2, .5);
    Kwadrat k1(A, 10.9);
    Kwadrat k2(B, 1.7);
    Kwadrat ks1 = k1 + k2;
    cout << ks1 << endl;
    Kwadrat ks2 = k2 + k1;
    cout << ks2 << endl;
    Kwadrat kr1 = k1 - k2;
    cout << kr1 << endl;
    Kwadrat kr2 = k2 - k1;
    cout << kr2 << endl;
    return 0;
}