diff --git a/01/input b/01/input
new file mode 100644
index 0000000..51d7adf
--- /dev/null
+++ b/01/input
@@ -0,0 +1,2255 @@
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diff --git a/01/script.rb b/01/script.rb
new file mode 100755
index 0000000..aab4d78
--- /dev/null
+++ b/01/script.rb
@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+
+require_relative '../common'
+
+class Day01 < Day
+  def part1
+    input.each_with_object([0]) do |row, result|
+      if row == ""
+        result << 0
+      else
+        result[-1] += row.to_i
+      end
+    end.max
+  end
+
+  def part2
+    input.each_with_object([0]) do |row, result|
+      if row == ""
+        result << 0
+      else
+        result[-1] += row.to_i
+      end
+    end.sort[-3..-1].sum
+  end
+end
+
+Day01.run