#include<stdio.h>
#include<math.h>

typedef struct {
  double x;
  double y;
}XY;

int kock(int, XY, XY);

int main()
{
  int n;
  XY p1, p2;

  p1.x = 0;
  p1.y = 0;
  p2.x = 100;
  p2.y = 0;

  scanf("%d", &n);

  printf("%.8f %.8f\n", p1.x, p2.y);
  kock(n, p1, p2);
  printf("%.8f %.8f\n", p2.x, p2.y);

  return 0;
}

int kock(int n, XY p1, XY p2)
{
  XY s, t, u;

  if(n == 0)
    {
      return 0;
    }
  
  s.x = ((2.0*p1.x) + (1.0*p2.x)) / 3.0;
  s.y = ((2.0*p1.y) + (1.0*p2.y)) / 3.0;
  t.x = ((1.0*p1.x) + (2.0*p2.x)) / 3.0;
  t.y = ((1.0*p1.y) + (2.0*p2.y)) / 3.0;
  
  u.x = (t.x - s.x)*(1.0/2.0) - (t.y - s.y)*(sqrt(3.0)/2.0) + s.x;
  u.y = (t.x - s.x)*(sqrt(3.0)/2.0) - (t.y - s.y)*(1.0/2.0) + s.y;

  kock(n-1, p1, s);
  printf("%.8f %.8f\n", s.x, s.y);

  kock(n-1, s, u);
  printf("%.8f %.8f\n", u.x, u.y);

  kock(n-1, u, t);
  printf("%.8f %.8f\n", t.x, t.y);

  kock(n-1, t, p2);

  return 0;
}