Problem in recursion

Question

https://code.sololearn.com/ce6oI01kn8AQ/?ref=app
Can anyone tell me what is wrong with my code?

Answer 1

I think you might have copied this code from some where. While copying the code there are some hidden characters on line 53 after semicolon. Just remove spaces after semicolon in line 53 and keep as many spaces you want.

Answer 2

\U000000a0 is a space character used in html entities. So, if you have copied this code from webpage then obviously the error is with that 2 spaces after semicolon.