class Calc0221
  EPS = 1e-2

  def initialize(args)
    args = args.map { |l| l.chomp.split(/\s+/) }
    @n = args.shift.first.to_i
  end

  def run
    return 100 if @n == 0
    nm = 100 * @n
    nc = 1_000_000 - nm
    pa = 0.99 * nm / @n + 0.01 * nc / @n
    pb = 0.01 * nc / @n
    pb / pa * 100
  end
end

puts Calc0221.new(STDIN.readlines).run if __FILE__ == $0