class Integer
  def bitcount
    n = self
    count = 0

    while n > 0
      count += n & 1
      n >>= 1
    end

    count
  end
end

class Yukicoder
  UNKNOWN = -1

  def initialize
    n = gets.chomp.to_i

    check_list = Hash.new(UNKNOWN)
    check_list[1] = 1
    dist = 2
    states = [1]

    while states.any?
      next_states = []

      states.each do |s|
        move_dist = s.bitcount
        a = s - move_dist
        b = s + move_dist

        if a >= 1 && check_list[a] == UNKNOWN
          check_list[s - move_dist] = dist
          next_states << s - move_dist
        end

        if b <= n && check_list[b] == UNKNOWN
          check_list[s + move_dist] = dist
          next_states << s + move_dist
        end
      end

      states = next_states.dup
      dist += 1
    end

    puts check_list[n]
  end
end

Yukicoder.new