From 4b0aa584e0e88e3c16d7fcd7328432db80e0650b Mon Sep 17 00:00:00 2001
From: Nat Lasseter <user@4574.co.uk>
Date: Mon, 3 Dec 2018 12:36:41 +0000
Subject: [day03part1] Trivial optimisation

---
 day03/part1 | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/day03/part1 b/day03/part1
index ae16800..79b9d85 100755
--- a/day03/part1
+++ b/day03/part1
@@ -1,9 +1,7 @@
 #!/usr/bin/env ruby
 
 cloth = Array.new(1000) do
-  Array.new(1000) do
-    Array.new
-  end
+  Array.new(1000, 0)
 end
 
 input = $stdin.readlines.map(&:chomp).map do |x|
@@ -13,7 +11,7 @@ end
 input.each do |claim|
   (claim[1]...(claim[1]+claim[3])).each do |c|
     (claim[2]...(claim[2]+claim[4])).each do |r|
-      cloth[c][r] << claim[0]
+      cloth[c][r] += 1
     end
   end
 end
@@ -22,7 +20,7 @@ clashes = 0
 
 cloth.each do |c|
   c.each do |r|
-    clashes += 1 if r.length > 1
+    clashes += 1 if r > 1
   end
 end
 
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