From b880d35aba91fd5c9a8a696705914d44da77e508 Mon Sep 17 00:00:00 2001
From: Nat Lasseter <Nat Lasseter nathan@bytemark.co.uk>
Date: Mon, 18 Dec 2017 22:33:34 +0000
Subject: Day17 Part1

---
 day17/input |  1 +
 day17/part1 | 13 +++++++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 day17/input
 create mode 100755 day17/part1

(limited to 'day17')

diff --git a/day17/input b/day17/input
new file mode 100644
index 0000000..8661997
--- /dev/null
+++ b/day17/input
@@ -0,0 +1 @@
+328
diff --git a/day17/part1 b/day17/part1
new file mode 100755
index 0000000..e1c5027
--- /dev/null
+++ b/day17/part1
@@ -0,0 +1,13 @@
+#!/usr/bin/env ruby
+
+input = gets.chomp.to_i
+
+buf = [0]
+pos = 0
+
+2017.times do |num|
+  pos = ((pos + input) % buf.length) + 1
+  buf.insert(pos, num + 1)
+end
+
+p buf[pos + 1]
-- 
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