require "advent"

input = input(2019, 8).chomp
layers = input.chars.each_slice(25*6).to_a
layer = layers.min_by(&.count('0'))
puts(layer.count('2') * layer.count('1'))

message = layers.reduce do |l1, l2|
  l1.zip_with(l2) do |a1, a2|
    next (a1 == '2') ? a2 : a1
  end
end

6.times do |i|
  25.times do |j|
    print(message[25*i+j] == '1' ? '#' : ' ')
  end
  puts
end