class Point
  attr_accessor :x, :y
  def initialize(x = 0.0, y = 0.0)
    @x = x
    @y = y
  end
end

def koch(n, a, b)
  return if n == 0
  s = Point.new
  t = Point.new
  u = Point.new
  th = Math::PI * 60.0 / 180.0

  s.x = (2.0 * a.x + 1.0 * b.x) / 3.0
  s.y = (2.0 * a.y + 1.0 * b.y) / 3.0
  t.x = (1.0 * a.x + 2.0 * b.x) / 3.0
  t.y = (1.0 * a.y + 2.0 * b.y) / 3.0
  u.x = (t.x - s.x) * Math.cos(th) - (t.y - s.y) * Math.sin(th) + s.x
  u.y = (t.x - s.x) * Math.sin(th) + (t.y - s.y) * Math.cos(th) + s.y

  koch(n - 1, a, s)
  printf("%.8f %.8f\n", s.x, s.y)
  koch(n - 1, s, u)
  printf("%.8f %.8f\n", u.x, u.y)
  koch(n - 1, u, t)
  printf("%.8f %.8f\n", t.x, t.y)
  koch(n - 1, t, b)
end

n = gets(chomp:true).to_i
a = Point.new
b = Point.new(100)

printf("%.8f %.8f\n", a.x, a.y)
koch(n, a, b)
printf("%.8f %.8f\n", b.x, b.y)
