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xpqz/day6.apl

Created December 6, 2021 10:28
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day6.apl
⎕FR ⎕PP ⎕IO←1287 34 0
init←{⍺ (≢⍵)}⌸∊⎕CSV(⊃⎕NGET'../d/6'1)''4
state←init[;1]@(init[;0])⊢9⍴0
day6←{s←9⍴0⋄s[6 8]←⍵[0]⋄s[⍳8]+←⍵[1+⍳8]⋄s}
+/day6⍣80⊢state
+/day6⍣256⊢state
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