From c13a36eb26055d80749a862d302c208898fe049a Mon Sep 17 00:00:00 2001
From: Nat Lasseter <user@4574.co.uk>
Date: Mon, 3 Dec 2018 10:20:48 +0000
Subject: Add Day03

---
 day03/part1 | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100755 day03/part1

(limited to 'day03/part1')

diff --git a/day03/part1 b/day03/part1
new file mode 100755
index 0000000..ae16800
--- /dev/null
+++ b/day03/part1
@@ -0,0 +1,29 @@
+#!/usr/bin/env ruby
+
+cloth = Array.new(1000) do
+  Array.new(1000) do
+    Array.new
+  end
+end
+
+input = $stdin.readlines.map(&:chomp).map do |x|
+  /#(\d+) @ (\d+),(\d+): (\d+)x(\d+)/.match(x).captures.map(&:to_i)
+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]
+    end
+  end
+end
+
+clashes = 0
+
+cloth.each do |c|
+  c.each do |r|
+    clashes += 1 if r.length > 1
+  end
+end
+
+puts clashes
-- 
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