#include <iostream>

using namespace std;


class robot
{
public:

    virtual void praca()const = 0;

    virtual robot& operator-=(const int& a2) = 0;

    virtual ~robot(){}
};

class rt1 : public robot
{
protected:
    string * txt;
public:
    rt1():txt(new string("brak")){}
    rt1(const string& a1): txt(new string(a1)){}
    rt1(const rt1& a1): txt(new string(*a1.txt)){}


    rt1& operator =(const rt1& a1)
    {
        if(this != &a1)
        {
            delete txt;
            txt = new string(*a1.txt);
        }
        return *this;
    }



    void praca()const
    {
        cout << *txt << endl;
    }

    robot & operator-=(const int& a1)
    {
        return *this;
    }


    ~rt1(){delete txt;}
};

class rt2 : public rt1
{
protected:
    int w;
public:
    rt2():rt1(),w(0){}
    rt2(const string& a1,const int& a2): rt1(a1),w(a2){}

    void praca()const
    {
        cout << *txt << " " << w << endl;
    }


    robot & operator-=(const int& a1)
    {
        w -= a1;
        return *this;
    }



};








int main()
{
    const rt1 odbior("Odebrano gotowy produkt");
    robot * linia[5];

    linia[0] = new rt1("Polozono");
    linia[1] = new rt2("Uderzono",5);
    linia[2] = new rt2("Prawo",4);
    linia[3] = new rt2("Uderzono",7);
    linia[4] = new rt1(odbior);

    for(int i = 0; i < 5; i++)
    {
        linia[i] -> praca();
    }

    cout << "*******3*******" << endl;
    cout << endl;


    *linia[3] -= 5;

    for(int i = 0; i < 5; i++)
    {
        delete linia[i];
    }

    return 0;
}