Day 8

i_like_registers.rb

@@ -0,0 +1,25 @@
+input = File.read("input_8.txt").split("\n")
+regexp = /([a-z]+) (inc|dec) (-?\d+) if ([a-z]+) (.+) (-?\d+)/
+res = Hash.new 0
+
+parsed = input.map do |s|
+  meh = s.match(regexp).captures
+  [meh[0].to_sym, meh[1].to_sym, meh[2].to_i, meh[3].to_sym, meh[4].to_sym, meh[5].to_i]
+end
+
+max = 0
+parsed.each do |parsed_i|
+  if res[parsed_i[3]].send(parsed_i[4], parsed_i[5]) then
+    case parsed_i[1]
+    when :inc
+      res[parsed_i[0]] += parsed_i[2]
+    when :dec
+      res[parsed_i[0]] -= parsed_i[2]
+    end
+    if res[parsed_i[0]] > max then max = res[parsed_i[0]] end
+  end
+end
+
+p res.values.max
+p max
+