#! /usr/bin/env ruby

if ARGV.length != 1
        abort("Incorrect arguments - pass a single file")
elsif not File.exist? (ARGV[0])
        abort ("File #{ARGV[0]} did not exist")
end

file = ARGV[0]
sum = 0
File.open(file, "r").each_line do |line|
	match = /^[^0-9]*([0-9]).*?(([0-9])[^0-9]*)?$/.match(line)
	if match
		first_num = match[1].to_i
		second_num = match[3].nil? ? first_num : match[3].to_i
		sum += (first_num * 10) + second_num
        end
end

puts sum