1. Yes, kata can play on words. Where does it say they can't?
2. This kata's author was Chinese. Broaden your mind.

If you feel you need to suggest updates to the description, by all means, do so. But please don't make it sound like you want all descriptions dumbed down to flavourless beginner's English because some people might not be able to understand every nuance.

I think it was a cry from the heart

@A_Vaclav: actually, I don't like putting extra spaces in there because it makes it harder (for me) to visually (and instantly) parse how the logic is set up. There I can identify at first glance the two branches of the conditionnal structure. That's not the case anymore with all those extra spaces.

Please use spoiler flag, comments are visible from the dashboard. I sincerely doubt that adding space the way you suggest it would change anything in any code's speed...

There isn't much to say, actually, just click on the "Fork" button/word under the solution you're interested in and you're done ;)

(well, almost: you just might need to change the language version in the drop down box, if the tests do not wanna run)

edit: note that you shouldn't publish that fork, unless you wanna show something to the original author of the solution or start a discussion with him (he'll get a notification if the fork is published)

when you wanna try out solutions, you can use the fork tool rather than the trainer.

Cheers

Changed.

I think it's because the sympy module is not supported in codewars.
I didn't explicitly add any code in my test cases to disallow any modules.