import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.Scanner;
import java.util.concurrent.Semaphore;
class Car extends Thread {
    Parking parking;
    int name;
    Car(Parking parking, int name) {
        this.parking = parking;
        this.name = name;}
    void enterParking() {
        parking.enter(this.name);}
    void exitParking() {
        parking.exit(this.name);}
    @Override
    public void run() {
        for (int i = 0; i < 10; ++i) {
        this.enterParking();
        try {
            Thread.sleep(1000 + (int)(Math.random() * 1000));
        } catch (InterruptedException ex) {
            Logger.getLogger(Car.class.getName()).log(Level.SEVERE, null, ex);}
        this.exitParking();
         try {
            Thread.sleep(1000 + (int)(Math.random() * 1000));
        } catch (InterruptedException ex) {
            Logger.getLogger(Car.class.getName()).log(Level.SEVERE, null, ex);}} }}
class Parking extends Thread {
    Semaphore semaphore;
    Parking(int place) {
        this.semaphore = new Semaphore(place);
    }
    void enter(int name) {
        try {
            semaphore.acquire();
            System.out.println("Car wjechal " + name);
        } catch (InterruptedException e) {}}
    void exit(int name) {
        System.out.println("Car wyjechal " + name);
        semaphore.release(); }
    @Override
    public void run() {
        while (true) {
            System.out.println("Liczba miejsc: " + semaphore.availablePermits());
            try {
                Thread.sleep(500);
            } catch (InterruptedException ex) {
                Logger.getLogger(Parking.class.getName()).log(Level.SEVERE, null, ex);}}}}
public class JavaWspolbiezne {
    public static void main(String[] args) throws InterruptedException {
        Parking parking = new Parking(5);
        parking.setDaemon(true);
        parking.start();
        Thread[] threads = new Thread[10];
        int cars = 10;
        for (int i = 0; i < cars; ++i) {
            threads[i] = new Thread(new Car(parking, i));
            threads[i].start();}}}