thanks ill try

Unfortunately, your algorithm is too slow. Try to solve it using number theory! (^^)
By the way, there's no need to use multithreading.

timed out no matter what

Added. Thank you very much.

Fixed now. Thank you very much.

Should it be mentioned that the function is pure or am I missing something?

Nice Kata! Suggestion to add tag PERFOMANCE

Sure, I'll update it to Python once the improved random tests in C++ are done by the author.

Perhaps you should generate more variation in random tests. I would try to include patterns from each of the fixed test batches.

Nope, I will add it if needed.

Did you prohibit some modules in Python?

Thank you for translation.

• Python translation

• performance tag could be used

Thank you very much!!!

Dude!!!
Very nice kata.. Had to take a paper and a pen on this one :-)