english: The first prisoner has a 50% chance of giving a wrong answer about his own hat, but the parity information he conveys allows everyone else  to guess theirs with absolute certainty.
non_english: Prvi zatvorenik ima 50% šanse da da pogrešan odgovor o svom šeširu, ali informacija o paritetu koju on saopštava omogućava svima ostalima da pogode svoj sa apsolutnom sigurnošću.