import java.util.concurrent.locks.ReentrantLock;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.CountDownLatch;

class Monitor{

  //lagrer det minste tallet til naa
  private int minstTall;
  private Lock laas = new ReentrantLock();
  private CountDownLatch barrier;

  public Monitor(int antTraader, int forste){
    barrier = new CountDownLatch(antTraader);
    minstTall = forste;
  }

  public void leggTilTall(int tall){
    laas.lock();
    try{
      if(tall < minstTall){
        minstTall = tall;
      }
      barrier.countDown(); 
    }finally{
      laas.unlock();
    }
  }

  public int hentMinsteTall(){
    //venter til alle traadene er ferdig med aa finne sitt minste tall
    try{
      barrier.await();
    }catch(Exception e){
      System.out.println(e);
    }
    return minstTall;
  }
}