dimitri/advent-of-code
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Dimitri Lozeve 2024-11-12 21:43:32 +01:00
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2018/day03/day03.dyalog Normal file
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⎕IO←0
x←⊃⎕nget'input.txt'1
x←⍎¨¨'\d+'⎕S'&'¨x
⍝ Part 1
claims←{id x y w h←⍵ ⋄ (x+⍳w)∘.,y+⍳h}¨x
fabric←1000 1000⍴0
{fabric[⍵]+←1}¨claims
+/,1<fabric
⍝ Part 2
⊃⊃x/⍨{∧/,1=fabric[⍵]}¨claims