even and odd doesn't work, any help?

Question

it's simple and i'm new in the computer class and there's errors in the lines
https://code.sololearn.com/c0Mnffxj0fpK/?ref=app

Answer 1

look at this
https://code.sololearn.com/c0iE5wS03HcH/?ref=app

Answer 2

Try this......
https://code.sololearn.com/c0iE5wS03HcH/?ref=app

Answer 3

i should have mentioned that i need the shortest version possible