I have never seen so many cheating solutions in Kata.

otherwise omniBool = undefined.
thx natan for your reply.

Need to fix import lists (haskell ver.)

test/FinalSpec.hs:12:22: error:
• Variable not in scope: (==) :: Bool -> Bool -> t0
• Perhaps you want to add ‘==’ to the import list in the import of
‘Prelude’ (test/FinalSpec.hs:3:1-36).

This is a bad task for level 6. Look at the comments. Only participants with 1,2 kyu and 1,2 dan are satisfied.

My solution makes me happy

expected: Just "f(x) = x + -1"
but got: Just "f(x) = x - 1"

make my day

Hint #1 is very good.

bruteforce is possible too

thank you

Incredible. My solution is better than the rest in the first time.