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

class MyRunnable implements Runnable {
    Queue<Long> queue;
    
    MyRunnable(Queue<Long> queue) {
        this.queue = queue;
    }
    
    public void run() {
        try {
            long start = System.currentTimeMillis();
            int randomNum = ThreadLocalRandom.current().nextInt(0, 200);
            Thread.sleep(randomNum);
            queue.add(System.currentTimeMillis() - start);
        } catch (InterruptedException e) {
            System.out.println("interrupted");
            queue.add((long) -1);
        }
    }
}

class Main {
    public static void main(String[] args) throws InterruptedException {
        int threadCount = 10;
        Queue<Long> queue = new ConcurrentLinkedQueue<Long>();

        Thread[] n = new Thread[threadCount];
        for (int i = 0; i < threadCount; i++) {
            n[i] = new Thread(new MyRunnable(queue));
            n[i].start();
        }
        for (int i = 0; i < threadCount; i++) {
            n[i].join();
        }
        
        System.out.println(queue);
    }
}