class Yukicoder
  def initialize
    s = gets.chomp
    max_count = 0
    count = 0

    s.chars.each do |ch|
      if ch == '…'
        count += 1
      else
        count = 0
      end

      max_count = [max_count, count].max
    end

    puts max_count
  end
end

Yukicoder.new