# Experimental!

$
°$"_\n\n_"
∩(⊜□≠@\n.)
⊓(≡(⋕⊟°$"_|_"))(≡(⍚⊜⋕≠@,.))
Rules   ←
Updates ←

⊃(▽)(▽¬) ≡(/×◇⧈(⍜¤∈Rules) 2) .Updates
Correct   ←
Incorrect ←

Middle ← ⊡⌊÷₂⧻.

Part₁ ← /+ ≡◇Middle Correct

Sort ← ⊏⍏/+∈Rules⊸⊞⊟.
Part₂ ← /+ ≡◇(Middle Sort) Incorrect

$Part₁ Part₁
$Part₂ Part₂