#include <iostream>
#include <cstring>
using namespace std;
class Karticka
{
 protected:
    int brojVozena;

public:
    Karticka(int BrojVozena)
    {
        brojVozena=BrojVozena;
    }
    Karticka(){}
    virtual int vkupnaCena() = 0;
    virtual ~Karticka(){}
     bool operator < (Karticka &k)
    {
        return this->vkupnaCena()<k.vkupnaCena();
    }


    friend ostream& operator<< (ostream &out, Karticka &k)
    {
    	out<<"Vkupna cena: "<<k.vkupnaCena()<<endl;
       out<<"Broj na vozenja: "<<k.brojVozena<<endl;
        return out;
    }


};

class KartickaAvtobus : public Karticka
{
private:
    int cena;
    int cenaEdno;
    //int brojV;
public:
    KartickaAvtobus (int Cena, int CenaEdno, int BrojV)
    {
        cena=Cena;
        cenaEdno=CenaEdno;
        brojVozena=BrojV;
    }
    KartickaAvtobus(){}

    int vkupnaCena()
    {
        return cena + (cenaEdno * brojVozena);
    }
};

class KarickaVoz : public Karticka
{
private:
    //int brojVoz;
    bool gradska;
public:
    KarickaVoz(int BrojVoz, bool Gradska)
    {
        brojVozena=BrojVoz;
        gradska=Gradska;
    }
    KarickaVoz(){}

    int vkupnaCena()
    {
        if(gradska == true)
            return brojVozena*50;
        else
            return brojVozena*95;
    }

};

class AvtomatZaKarticki
{
public:
    static int total(Karticka **karticki,int n)
    {   int suma=0;
        for(int i=0;i<n;i++)
        {
            suma+=karticki[i]->vkupnaCena();
        }

        return suma;

    }
};


int main() {
    int n;
    cin >> n;
    if(n == 0) {
		cout << "Constructors" << endl;
        KartickaAvtobus ds(150,35,2);
        KarickaVoz cs(15,false);
        cout << "OK" << endl;
    } else if(n == 1) {
  		cout << "operator <<" << endl;
        KartickaAvtobus ds(150,35,2);
        KarickaVoz cs(10,true);
        cout << ds << endl;
        cout << cs << endl;
    } else if(n == 2) {
  		cout << "<" << endl;
        KartickaAvtobus ds(150,35,2);
        KarickaVoz cs(20,true);
        KarickaVoz css(30, false);
        cout << (ds < cs) << endl;
        cout << (cs < ds) << endl;
        cout << (cs < css) << endl;
        cout << (cs < css) << endl;
    } else if(n == 3) {
  		cout << "Karticka total" << endl;
        KartickaAvtobus ds1(150,35,2);
        KartickaAvtobus ds2(100,80,5);
        KartickaAvtobus ds3(150,40,1);
        KarickaVoz cs1(15,false);
        KarickaVoz cs2(10,true);
        KarickaVoz cs3(20,true);
        Karticka** s = new Karticka*[6];
        s[0] = &ds1;
        s[1] = &ds2;
        s[2] = &ds3;
        s[3] = &cs1;
        s[4] = &cs2;
        s[5] = &cs3;
        cout<<AvtomatZaKarticki::total(s, 6);
        delete [] s;
    }

    return 0;
}