Yeah mine timed out at 12 seconds on both tests, but I printed the input of the function and there was no performance problems whatsoever. Must be a problem related to the internal tests.

There also seems to be a bug in codewars itself, as I had the same problem, but I simply printed the input of the function, and performance was all of a sudden fine.

Oh, haha. That's true, I didn't notice that. Thanks for telling me.

This website is so great and useful for practicing my coding skills. One feature I would really love is if we could have the system for leveling up and increasing in honor apply individually for each programming language. For example if I'm 6 kyu from practing lots of JavaScript activities, but I've never practiced Haskell before, or whatever, I would start from 8 kyu in Haskell, etc, but still be 6 kyu in JS. And I could level up in rank and honor in a certain language specifically when I do exercises in that language. I think that would be a feature that would improve the usefulness for this training site even more. Thanks for all the work put into this! It's great!