import java.util.Calendar;

class Program {
    public static void main(String[] args) {
    	System.out.println(aleatoriar());
    }
	public static int aleatoriar() {       
	    Calendar lCDateTime = Calendar.getInstance();
	    return (int)(lCDateTime.getTimeInMillis() % 10000);
	}
}

//https://pt.stackoverflow.com/q/54349/101