From 37029c00d1bf88d78b24618b444e49ee85026b29 Mon Sep 17 00:00:00 2001
From: rhiannon morris <rhi@rhiannon.website>
Date: Sun, 18 Dec 2022 13:47:21 +0100
Subject: [PATCH] day18.1

---
 aoc.bqn | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/aoc.bqn b/aoc.bqn
index 1458db4..4d18983 100644
--- a/aoc.bqn
+++ b/aoc.bqn
@@ -50,8 +50,6 @@ Day5 ⇐ {
 Day6 ⇐ {{𝕨+ ⊑/ ≡⟜⍷˘ 𝕨↕𝕩}⟜(•FChars 𝕩)¨ 4‿14}
 # ⟨ 1929 3298 ⟩
 
-Day7 ⇐ {𝕩, "mercury only"!0}
-
 Day8 ⇐ {
   _rots ← {F‿x←𝔽‿𝕩, >{F⌾𝕏x}¨⟨⊢,⍉,⌽˘,⍉⌽⟩}
   A ← {+´⥊ ∨˝ ∧´∘(⊑>1⊸↓)¨ 𝕩}
@@ -60,8 +58,6 @@ Day8 ⇐ {
 }
 # ⟨ 1843 180000 ⟩
 
-Day9 ⇐ {𝕩, "mercury only"!0}
-
 Day10 ⇐ {
   Line ← 0∾ ·•BQN⎊⟨⟩ 5↓⊢
   A ← (+´ 19⊸⊏∘⍉) (⊢×1+↕∘≠⌾⥊)
@@ -70,3 +66,11 @@ Day10 ⇐ {
 }
 # ⟨ 13060 "FJUBULRZ" ⟩
 # (but the string is a big banner)
+
+Day18 ⇐ { # part 1 only :[
+  grid  ← (↕∘> 1+⌈˝)⊸∊ •BQN¨ '‿'⍟(=⟜',')⚇0 •FLines 𝕩
+  touch ← +´⥊ «‿» {∧⟜(𝕎⎉𝕩) grid}⌜ 1+↕3
+  +´⥊ (6×grid)-touch
+}
+# 3470
+•Show Day18 ⊑•args