aoc/18/3/main.rb

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757 B
Ruby
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2023-04-17 18:18:20 +00:00
require 'pry'
arr = Array.new(1000){Array.new(1000){{count: 0, id: nil}}}
ids = Array.new
dups = Array.new
File.open("input", "r") do |f|
f.each_line do |line|
id = line[/\d+/].to_i
offset_left, offset_top = line[/\d+,\d+/].split(",").map(&:to_i)
width, height = line[/\d+x\d+/].split("x").map(&:to_i)
ids.push id
height.times do |y|
width.times do |x|
arr[offset_top + y][offset_left + x][:count] += 1
if arr[offset_top + y][offset_left + x][:id] != nil
dups.push arr[offset_top + y][offset_left + x][:id]
dups.push id
end
arr[offset_top + y][offset_left + x][:id] = id
end
end
end
end
puts arr.flatten.select{|a| a[:count] > 1}.count
puts (ids - dups.uniq)