From 90acf50b07732003866574e22f64483df096c6c8 Mon Sep 17 00:00:00 2001
From: Jay Foad <jay.foad@gmail.com>
Date: Fri, 7 Dec 2018 12:41:25 +0000
Subject: [PATCH] Day 6 solution.

---
 p6.dyalog |  7 +++++++
 p6.txt    | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 p6.dyalog
 create mode 100644 p6.txt

diff --git a/p6.dyalog b/p6.dyalog
new file mode 100644
index 0000000..2945751
--- /dev/null
+++ b/p6.dyalog
@@ -0,0 +1,7 @@
+p←↑⍎¨⊃⎕NGET'p6.txt'1
+g←{1=≢z←⍸t=⌊/t←+/|p-⍤1⊢⍵:⊃z⋄¯1}¨⍳⌈⌿p
+sort←{(⊂⍋⍵)⌷⍵}
+a←sort{⍺,≢⍵}⌸,g
+b←sort{⍺,≢⍵}⌸,1 1↓¯1 ¯1↓g
+⌈/⊢/↑(↓a)∩↓b ⍝ part 1
++/,{10000>+/,|p-⍤1⊢⍵}¨⍳⌈⌿p ⍝ part 2
diff --git a/p6.txt b/p6.txt
new file mode 100644
index 0000000..fb5384c
--- /dev/null
+++ b/p6.txt
@@ -0,0 +1,50 @@
+227, 133
+140, 168
+99, 112
+318, 95
+219, 266
+134, 144
+306, 301
+189, 188
+58, 334
+337, 117
+255, 73
+245, 144
+102, 257
+255, 353
+303, 216
+141, 167
+40, 321
+201, 50
+60, 188
+132, 74
+125, 199
+176, 307
+204, 218
+338, 323
+276, 278
+292, 229
+109, 228
+85, 305
+86, 343
+97, 254
+182, 151
+110, 292
+285, 124
+43, 223
+153, 188
+285, 136
+334, 203
+84, 243
+92, 185
+330, 223
+259, 275
+106, 199
+183, 205
+188, 212
+231, 150
+158, 95
+174, 212
+279, 97
+172, 131
+247, 320