cstutoringcenter.com_The Birthday Paradox

import urllib, urllib2, time
session = ""
for x in xrange(1,1000):
    input = {"id":"3","answer":"%0.3f"%(x/1000.0)}
    input = urllib.urlencode(input)
    print input
    req = urllib2.Request("http://www.cstutoringcenter.com/problems/answer.php", input)
    req.add_header("Cookie", "PHPSESSID="+session)
    time.sleep(2)
    if urllib2.urlopen(req).read().find("WRONG")== -1:
        print 'GOOOOOOOOOOOOOD : ' + str(x)
        break