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#!/usr/bin/env ruby
data = File.read("data.txt")
data = data.split("\n")
data = data.map(&:split)
first_row = data.map { |data| data[0] }.sort
second_row = data.map { |data| data[1] }.sort
merged = first_row.zip(second_row)
distance = merged.map do |row|
(row[0].to_i - row[1].to_i).abs
end.sum
p distance
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