Thanks a lot! You help me to find the most stupid bug in my code! Of course it was infinite loop! Thank you!

You've created an infinite loop. It only triggers when your code reaches the second sample test, so when your code returns the correct answer for the first test, your code will time out.

I have error "Execution Timed Out (12000 ms)". If anybody knows why?
It's interesting that this error appears when kata return correct answer. When kata return wrong answer there in no error, only message about "expected.."