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2024 day 4 part 2

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Dimitri Lozeve 2024-12-04 13:53:52 +01:00
parent 61962a5c27
commit e65fcb1e68
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2024/day04/day04.bqn
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@ -6,3 +6,7 @@ d←∾1⊸↓¨∾¨⌽⍟0‿1¨¨UpperDiags¨a
na←+´+´∘⥊¨"XMAS"⊸⍷¨a na←+´+´∘⥊¨"XMAS"⊸⍷¨a
nd←+´+´¨"XMAS"⊸⍷¨d nd←+´+´¨"XMAS"⊸⍷¨d
•Show na+nd •Show na+nd
idxs←(⥊↕¯2+≢in)+⌜↕3‿3
Diags←0‿0⊸⍉¨ ⌽∘⍉⍟0‿1
•Show +´{∧´(Diags𝕩⊑in)∊"MAS"‿"SAM"}˘idxs