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 counter = 5;

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

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

    Lock laas = new ReentrantLock();

    private String kode;

    public boolean sammenlignKode(String k){
	return k.equals(kode);
    }

    public void lagreKode(String k){
	laas.lock();
	try {
	    kode = k;
	}
	finally {
	    laas.unlock();
	}
    }

    public String hentKode(){
	return kode;
    }
}