Advent of Code day 5

part1.rb

data = DATA.read

seeds = data[/seeds: (.+)/, 1].split.map(&:to_i)
maps = data.scan(/map:\n(.+?)(?:\n\n|\z)/m).map { |(x)| x.lines.map { _1.split.map(&:to_i) } }

locations = seeds.map { |seed|
  maps.reduce(seed) { |input, map|
    d, s, _r = map.find { |_d, s, r| (s..(s + r)).cover?(input) }
    d ? d + (input - s) : input
  }
}

puts locations.min

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