class PairOfNumbers
{
public:
    class RangeArray //jakas klasa z dupy nie majaca najmniejszego sensu
    {
    public:
        RangeArray(PairOfNumbers val);
    };

    int first, second;

    PairOfNumbers(int, int); //konstruktor
    PairOfNumbers(const PairOfNumbers&); //copy constructor

    int At(int);
    PairOfNumbers Swapped();
    void Print();
    void Add(int);
    void Scale(int);
    void Info();
};