Thanks! I learned a lot from your code!

Thanks, by removing the print statements, it finally passed. :)

I'm trying to use Python to solve this kata. All tests passed except the second test in Anti-cheating checks which shows that You're asking for trouble..., but I'm not hard coding the answer and the total length of the solution is under 5,000 characters, is this a bug or just my problem?

char buffer[50] -> char buffer[51]

I didn't actually count it before submitting, but the answer was accepted. :(