2024/03a/run.rb


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#!/usr/bin/env ruby

data = File.read("data.txt")

valid = data.scan(/mul\(\d*,\d*\)/)
sum = 0;

ops = valid.map do |operation|
  operation.gsub(/[^\d*,]/, "").to_s.split(",").map(&:to_i).reduce(&:*)
end

p ops.sum