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#!/usr/bin/env ruby
data = File.read("data.txt")
valid = data.scan(/(mul\(\d+,\d+\)|don't\(\)|do\(\))/)
p valid
sum = 0;
act = true
ops = valid.map do |operation|
if operation[0] == "don't()"
act = false
0
elsif operation[0] == "do()"
act = true
0
elsif act
operation[0].gsub(/[^\d*,]/, "").to_s.split(",").map(&:to_i).reduce(&:*)
else
0
end
end
p ops.sum
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