1074 as output, works fine on my computer
I would like to give some feedback about ...
From: http://www.checkio.org/mission/hamming-distance2/solve/
HTTP_USER_AGENT:
Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36