Hello everyone!

I'm looking for the time complexity of the builder of c++ regex object. From a fast web search, i didn't find an answer (at least from the top 3 google search results lol). The stackoverflow's answer does not give an isnight of what it's happening in the constructor.

If you wonder why i'm looking for this, here are my two submission for the problem 1800A - Is It a Cat?.

• Tle 196106344
• Accepted 196106502

Hello guys, i'm practicing with python and i don't understand why this sub 58435675 on codefroces always print -1 while on ideone just works fine. Can you help me? <.<

If you have any advice on how to improve my code in python it is appreciated.