#include <iostream>

using namespace std;

class figura{
    protected:
string *kolor;

public:
    figura():kolor(new string("brak")){}
    figura(const string &q1):kolor(new string(q1)){}

virtual double pole()const=0;

virtual ~figura(){
delete kolor;}

};

class kolo:public figura{
    protected:
double r;
    public:
    kolo():r(0){}
    kolo(const string &q1, const double &q2):figura(q1),r(q2){}
    double pole()const{
    return 3.14*r*r;
    }

    virtual ~kolo(){}
};

class prost:public figura{
    protected:
double a,b;
    public:

    prost():a(0),b(0){}
    prost(const string &q1, const double &q2, const double &q3):figura(q1),a(q2),b(q3){}
    double pole()const{
    return a*b;
    }

    virtual ~prost(){}
};

class prostop:public prost{
    protected:
double h;
    public:


    prostop():h(0){}
    prostop(const string &q1,const double &q2, const double &q3, const double &q4):prost(q1,q2,q3),h(q4){}

    double pole()const{
    return 2*(a*b)+2*(a*h)+2*(b*h);
    }

    virtual ~prostop(){}
};

int main()
{
    const kolo test1("czarny",100);
    const prostop test2("szary",2,2,2);
    typedef figura* wsk;
    figura* tab[5];

tab[0]=new kolo("czerwony",1);
tab[1]=new kolo;
tab[2]=new prost("niebieski",1,1);
tab[3]=new prostop("zielony",1,1,1);
tab[4]=new prostop;

for (int i=0;i<5;++i)
	cout<<tab[i]->pole()<<endl;
cout<<"*******  3 *******" <<endl;
    return 0;
}