class Node
  attr_reader :str, :current

  def initialize(current, str)
    @current = current.dup
    @str = str.dup
  end
end

class Yukicoder
  def initialize
    s = gets.chomp

    queue = []
    root = Node.new(s, "")
    queue << root
    result = Hash.new

    while !queue.empty?
      node = queue.shift

      if node.current.empty?
        result[node.str] = true
      else
        right_node = Node.new(node.current[0..-2], node.str + node.current[-1])
        left_node = Node.new(node.current[1..-1], node.str + node.current[0])

        queue.push(left_node, right_node)
      end
    end

    puts result.size
  end
end

Yukicoder.new