mport java.awt.Color;
import java.util.*;

class Car {

    public static void main(String[] args) {
        Car car1 = new Car(10, true);
        Car car2 = new Car(30, false);
        ParkingLot parkingL = new ParkingLot("Ved Linden");

        parkingL.parkCar(car1);
    }

    int speed;
    boolean automatic;
    Color color;

    public Car(int speed, boolean automatic) {
        this.speed = speed;
        this.color = Color.BLUE;
        this.automatic = automatic;
    }

    void accelerate() {
        speed = speed + 5;
    }
    void changeColor(Color c) {
        color = c;
    }
}


class ParkingLot {
    Car[] cars = new Car[3];
    String address;
    int carIndex = 0;

    public ParkingLot(String address) {
        this.address = address;
    }

    void parkCar(Car c) {
        cars[i++] = c;
    }

    void pickupCar(Car c) {
        cars[i--] = null;
    }
    void changeLocation(String a) {
        this.address = a;
    }

}