puzzle_3.bqn (255B)
1 #!/usr/bin/env BQN 2 3 input ← ⊑ •FLines "files/3.txt" 4 5 G ← +` ⟨0‿0⟩ ∾ (⟨0‿1,0‿¯1,¯1‿0,1‿0⟩ ⊑˜ (/"^v<>" ⍷˜ ⊢))¨∘⊢ 6 7 •Show ≢⍷ G input #part 1 8 •Show ≢⍷ (∾○G)´ (⊢⊔˜2|↕∘≠∘⊢) input #part 2
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