import java.util.concurrent.CountDownLatch;

class Arbeider implements Runnable{
  private final CountDownLatch ferdigSignal;
  private int id;

  public Arbeider(CountDownLatch ferdigSignal, int id){
    this.ferdigSignal = ferdigSignal;
    this.id = id;
  }

  public void run(){
    System.out.printf("#%d: Jeg jobber! :) \n", id);
    ferdigSignal.countDown();
  }
}