package ll;

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

class Sema {
	public static Semaphore s;

}

class Tred extends Thread {
	private int id;
	private BlockingQueue q;

	public Tred(int id, BlockingQueue q) {
		this.id = id;
		this.q = q;
	}

	public void run() {
		try {
			q.enqueue(5);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		q.dequeue();
	}

}

class BlockingQueue<T> {

	T[] contents;
	int capacity;
	static int poz = 0;

	public BlockingQueue(int capacity) {
		contents = (T[]) new Object[capacity];
		this.capacity = capacity;
	}

	public void enqueue(T item) throws InterruptedException {
		Sema.s.acquire();
		contents[poz] = item;
		poz++;

	}

	public void dequeue() {
		if (Sema.s.availablePermits() != capacity) {
			poz--;
			Sema.s.release();
		}
	}
}

public class Main {

	public static void main(String[] args) {
		ArrayList<Tred> tr = new ArrayList<>();
		Scanner s = new Scanner(System.in);

		int n = s.nextInt();
		BlockingQueue<Integer> q = new BlockingQueue<>(n);
		Sema.s = new Semaphore(n);

		n = s.nextInt();

		for (int i = 0; i < n; i++) {
			Tred a = new Tred(i, q);
			tr.add(a);
		}

		for (Tred r : tr) {
			r.start();
		}
		for (int i = 0; i < q.contents.length; i++) {
			System.out.println();
		}

	}

}