P.S. -- my god: http://www.artofproblemsolving.com/index.php http://www.artofproblemsolving.com/index.php Math club heaven. If only the Web had existed when I

P.S. -- my god: http://www.artofproblemsolving.com/index.php http://www.artofproblemsolving.com/index.php Math club heaven. If only the Web had existed when I was a teenager.