Thank You for answer, but actually, it's line 18 of << "tests.py", line 18, in doTests >>, not of my code. And that's mean the test doesn't process answer False right. But there 0 tests failed as it's said in the begining of log.

Time: 2790msPassed: 18Failed: 0Exit Code: 1
Test Results:
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
Test Passed
STDERR
Traceback (most recent call last):
File "tests.py", line 26, in
doTests()
File "tests.py", line 18, in doTests
a,b = actual[:-1],actual[1:]
TypeError: 'bool' object is not subscriptable

I don't understand what I do wrong.

Hello.

This is the time my code takes on my PC: 0.006575283594429493 seconds.
I every time get timeout on Your servers. Sorry, i give up.