I hid this solution. Do not submit solutions like this one (do not even try it in the trainer to avoid accidental submissions). If you want to experiment, create a fork of an existing solution.

See my comment above

These languages should be updated: Use object (or dynamic) in C# and a similar type in Scala.

hey, could u please write a short feedback on what should be modified/fixed/removed

Fixed.

Fixed. My apologies for the mistake.

The num argument is passed in edi. The return value should be in rdx:rax.

See the issue above.

Haskell: the expected value for "bbaa" should be Just (1, 'b') but the reference solution returns Just (1, 'a').

Fixed

Approved

done