Why this code is not working?

Question

https://code.sololearn.com/c6YMehiMKPXJ/?ref=app

Answer 1

https://code.sololearn.com/cADr9EZ9bX7h/?ref=app

Answer 2

thnks

Answer 3

oh yes

Answer 4

It works like that :
Don't forget the tabulation!
if... :
"your code"