We actually have a check that happens after the fact to prevent this. Basically if the kata always passes using your code, even when it is given code that is meant to always fail, then you will be marked as a cheater and docked additional points. We are rolling out the ability to retire kata (testing it now), so I'll retire this kata shortly.

We don't have anyway of flagging users yet, but I agree that user looks very suspicious. We have seen this pattern before and are constantly working on triggers to detect and penalize users who do this. If cheating is detected, the user loses all progress earned for the entire kata (for all languages), as well as lose their honor earned. They also get flagged with a cheater event for each instance. The first 3 events cost them 10 honor, while subsequent attempts cost them 40 honor.

I think we could auto-flag users who have the same or very similar solutions to others with 20+ line solutions. If this happens more than say 3 or 4 times then we would take a look at the account.

Fixed.
I should be ashamed, taking in account I've been pointed on the same issue 3 months ago.

you're right, examples changed, thx