class Box {
    private:
        int l;
        int b;
        int h;

    public:
        Box() : l(0), b(0), h(0) {}
        Box(int len, int brd, int hgt) : l(len), b(brd), h(hgt) {}

        Box(Box& obj) : l(0), b(0), h(0) {
            l = obj.l;
            b = obj.b;
            h = obj.h;
        }

        int getLength() {
            return l;
        }

        int getBreadth() {
            return b;
        }

        int getHeight() {
            return h;
        }

        int CalculateVolume() {
            return l * b * h;
        }

        bool operator < (Box& obj) {
            if (CalculateVolume() < obj.CalculateVolume()) {
                return true;
            } else {
                return false;
            }

        }

};