// $Id: MultiIncB.java,v 1.5 2002-07-08 01:02:49+09 kaiya Exp kaiya $

import java.util.*;

class MultiIncB extends Thread{
private Counter c;
private Random r;
private int id;

	MultiIncB(Counter cref, int i){
		c=cref;
		id=i;
		r=new Random();
	}

	void waiting(){
		try{ Thread.sleep(r.nextInt(100)); }catch(Exception e){}
	}

	void inc(){
		synchronized(c)
		{
			int v=c.val();
			waiting();
			c.set(v+1);
		}
	}

	public void run(){
		for(int i=0; i<10; i++){
			//System.out.print(id+".");
			inc();
			waiting();
		}
		System.out.println(c.val());
	}

	public static void main(String[] args){
		Counter c=new Counter();
		new MultiIncB(c, 1).start();
		new MultiIncB(c, 2).start();
		new MultiIncB(c, 3).start();
	}
}