class CarSpotController {

    private:
        int total_spots;
        int occupied_spots;

    public:
        CarSpotController(int default_total_spots) {
            this->set_total_spots(default_total_spots);
        }

        int get_total_spots() { 
            return this->total_spots; 
        }
        
        void set_total_spots(int total_spots) {
            this->total_spots = total_spots; 
        }

        int get_occupied_spots() { 
            return this->occupied_spots;
        }
        
        void set_occupied_spots(int occupied_spots) {
            this->occupied_spots = occupied_spots; 
        }

        void increment_occupied_spots () {
            this->occupied_spots++;
        }

        void decrement_occupied_spots () {
            this->occupied_spots--;
        }

        bool is_full() {
            return this->occupied_spots == this->total_spots;
        }

        bool is_empty() {
            return this->occupied_spots == 0;
        }
};