def which_price?(real, supposed)
  counts = [real, supposed]

  counts.map do |el|
    el.to_s.split('').select{ |el| el.match?(/\d/) }.map(&:to_i)
  end

  if counts[0] == counts[1]
    return 2
  elsif counts.map {|arr| arr[0] - arr[1]}
    .all? {|el| el.positive? || el.negative? }
    return 1
  else
    return 0
  end
end

real = '1-4'
supposed = '4:6'

puts which_price?(real, supposed)