Raw ← &fras"06.in" Count ← +1-⊃(⌊+1⊢)(⌈+¯1⊢⇌) Solve ← ÷2[⊃(-:)+⊃⊢(√-:⊃(×.⊢)(×4⊢⇌))] One ← /×Count⍉≡Solve⍉⊜(⊐⋕↘1⊜□≠@ .)≠@\n. Two ← Count Solve⊜(⋕▽≠@ .↘⊗@ .)≠@\n. ⊃One Two Raw