input = File.read("input-16.txt").strip.split(",")
#input = "s1,x3/4,pe/b".split(",")
matcher = /([s,p,x])(?:(\w*\/\w*)|(\w+))/
line = ('a'..'p').to_a
lines = []
#line = ('a'..'e').to_a

# Found cycles after 60 runs
actual_tries = 1000000000 % 60
(1..actual_tries).each do |i|
  lines << line.dup
  input.each do |s|
    match_data = (s.match matcher).to_a
    match_data[1] = match_data[1].to_sym
    case match_data[1]
    when :s
      line.rotate! -(match_data[3].to_i)
    when :x
      positions = match_data[2].split "/"
      line[positions[0].to_i], line[positions[1].to_i] = line[positions[1].to_i], line[positions[0].to_i]
    when :p
      buds = match_data[2].split "/"
      index_0, index_1 = line.find_index(buds[0]), line.find_index(buds[1])
      line[index_0], line[index_1] = line[index_1], line[index_0]
    end
  end
  # if lines.include? line then
  #   p "Cycle found after: #{i.to_s}"
  #   break
  # end
end

p line.join