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day22 part1 #1

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ngn opened this issue Dec 24, 2019 · 0 comments

ngn commented Dec 24, 2019 •

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nice hack with ⍎ :) you could track just the position of card 2019:

n←10007⋄a←2019⋄deal←with←into←stack←0
cut←{a-⍵}⋄new←{-a+1}⋄increment←{a×⍵}
a⊣{a⊢←n|⍎⍵}¨⊃⎕nget'p22.txt'1

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