Day 23 part 1.

jayfoad · Dec 26, 2018 · 31d0ce6 · 31d0ce6
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diff --git a/p23.dyalog b/p23.dyalog
@@ -0,0 +1,4 @@
+⎕IO←0
+p←↑⍎¨¨'-?\d+'⎕S'&'¨⊃⎕NGET'p23.txt'1
+r←⊢/p ⋄ p←0 ¯1↓p
++/{(⍵⌷r)≥+/|p-⍤1⊢⍵⌷p}⊃⍒r ⍝ part 1