import java.util.concurrent.*;
import java.util.*;

class Animal implements Runnable {
    protected String name;
    protected CountDownLatch lives;
    
    Animal(CountDownLatch lives, String name) {
        this.name = name;
        this.lives = lives;
    }
    
    public void run() {
        try {
            System.out.println("the " + this.name + " is alive");
            this.lives.await();
            System.out.println("the " + this.name + " is dead");
        } catch (InterruptedException e) {
            System.out.println("interrupted!");
        }
    }
}

class Killer implements Runnable {
    protected CountDownLatch lives;

    Killer(CountDownLatch lives) {
        this.lives = lives;
    }
    
    public void run() {
        while (this.lives.getCount() > 0) {
            System.out.println("kill");
            this.lives.countDown();
        }
    }
}

class Main {
    public static void main(String[] args) throws InterruptedException {
        // "a cat has nine lives"
        CountDownLatch lives = new CountDownLatch(9);
        Thread catThread = new Thread(new Animal(lives, "cat"));
        catThread.start();
        Thread.sleep(100);
        Thread killerThread = new Thread(new Killer(lives));
        killerThread.start();
        catThread.join();
        killerThread.join();
    }
}