class Tasks implements Runnable {
	public void run() {
		int sum = 0;
		for (int i = 0; i <= 1000; i++)
			sum += i;
		System.out.println("Result: " + sum);
	}
}
public class bbbb {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Thread t1 = new Thread(new Tasks());
		t1.start();
		System.out.println("Waiting...");
		
		Thread t2 = new Thread(new Tasks());
		t2.start();
		System.out.println("Waiting...");
		
	}

}