OMG! Thank, so much for you advise! I spend whole day for understanding what is wrong with my code. But now, I resolve it within 5 minutes. You are my sensei. OZZZ))

Approved.

Hi and welcome to Codewars - it seems that this is your first kata, so just to help you troubleshoot what's going wrong: you need to return your answer to the Codewars server, not just print it to console/screen.

So in your current solution, if you replace all the occurences of print by return you should already be in a much better position to debug any eventual problems in your code.

Also here is the useful Troubleshooting Guide that may help you in any later katas, if you have some problem with errors etc.

stupid task, any outputs doesn't agree.