import java.util.concurrent.locks.*;
import java.util.Scanner;

class Bang {
    public static void main(String[] args){
	Kode kode = new Kode();
	Thread lunte = new Thread(new Bombe(kode));
	Thread desarmer = new Thread(new Desarmer(kode));
	lunte.start();
	desarmer.start();
	try {
	    desarmer.join();
	}
	catch(InterruptedException e){}
	lunte.interrupt();
    }
}

class Bombe implements Runnable {

    Kode kode;
    int i = 5;

    public Bombe(Kode k){
	System.out.println("Legg inn armeringskode: ");
	k.leggInnKode(new Scanner(System.in).nextLine());
    }

    @Override
    public void run(){
	while (i>0){
	   System.out.println(i);
	   i--;
	   try {
	       Thread.sleep(1000);
	   }
	   catch (InterruptedException e){
	       return;
	   }
	}
	System.out.println("BOOM!");
	System.exit(0);
    }
}

class Desarmer implements Runnable {
    Scanner sc = new Scanner(System.in);
    Kode kode;

    public Desarmer(Kode k){
	kode = k;
    }

    @Override
    public void run(){
	System.out.println("SKriv: " + kode.hentKode() + " for aa desarmere bomben!\nBomben sprenger om 5 sekunder!");
	String inn = sc.nextLine();
	while (!kode.sammenlignKode(inn)){
	    System.out.println("Feil input");
	    inn = sc.nextLine();
	}
	System.out.println("Phew!");
    }
}



class Kode {
    private String kode;
    private Lock lock = new ReentrantLock(true);

    public boolean sammenlignKode(String s){
	return s.equals(kode);
    }
    public void leggInnKode(String k){
	lock.lock();
	try {
	    kode = k;
	}
	finally {
	    lock.unlock();
	}
    }
    public String hentKode(){
	return kode;
    }
}