#include <iostream>

using namespace std;

class DruhStudenta{
public:



};

class Student{
protected:
    string m_jmeno;
    float m_prospech;
    DruhStudenta* m_aktualniDruh;

public:
    Student(string jmeno, float prospech){
        m_jmeno=jmeno;
        m_prospech=prospech;
        m_aktualniDruh=new BeznyStudent(jmeno,prospech);
    };
    virtual float vratProspechoveStipendium() = 0;
};


class BeznyStudent:public DruhStudenta{
public:
    BeznyStudent(string jmeno, float prospech){
        m_jmeno=jmeno;
        m_prospech=prospech;

    }







};

class ProdlouzenyStudent:public DruhStudenta{
private:
    int m_dobaProdlouzeni;

public:





};





int main()
{
    cout << "Hello world!" << endl;
    return 0;
}