dimitri/advent-of-code
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Dimitri Lozeve 2024-11-12 21:43:32 +01:00
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2020/day03/day03.dyalog Normal file
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⎕io←0
p←'#'=↑⊃⎕NGET'input'1
f←{+/p[↓⍉↑(⍴p)|⍵×2⍴⊂⍳⌈(⊃⍴p)÷⊃⍵]}
f 1 3 ⍝ Part 1
×/f¨(1 1)(1 3)(1 5)(1 7)(2 1) ⍝ Part 2