123

Round * kk = new LastRound(10,10,this->ui);

class Round : public QObject
{
    Q_OBJECT

    int period;
    int numberPics;
    Ui_Game *lala;

public:

    Round(int period, int numberPics, Ui_Game *lala)
    {
        this->period = period;
        this->numberPics = numberPics;
        this->lala = lala;
    }
};

class LastRound : public Round
{
    Q_OBJECT

public:

    LastRound(int period, int numberPics, Ui_Game *lala):Round(period, numberPics, *lala)
    {

    }
};