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

typedef struct {
  double x, y;
}Point;

void kock(int n, Point p1, Point p2)
{
  if (n == 0)
    return;

  // p1, p2 から s, t, u を計算
  Point s, t, u;

  s.x = p1.x + (p2.x - p1.x)/3.0;
  s.y = p1.y + (p2.y - p1.y)/3.0;

  t.x = p1.x + 2.0*(p2.x - p1.x)/3.0;
  t.y = p1.y + 2.0*(p2.y - p1.y)/3.0;

  double dx = t.x - s.x;
  double dy = t.y - s.y;
  
  u.x = dx * cos(M_PI/3.0) - dy * sin(M_PI/3.0) + s.x;
  u.y = dx * sin(M_PI/3.0) + dy * cos(M_PI/3.0) + s.y;

  kock(n-1, p1, s);
  printf("%f %f\n", s.x, s.y);
  kock(n-1, s, u);
  printf("%f %f\n", u.x, u.y);
  kock(n-1, u, t);
  printf("%f %f\n", t.x, t.y);
  kock(n-1, t, p2);
}
  
int main(void)
{
  int n;
  Point p1, p2;

  p1.x = p1.y = 0.0;
  p2.x = 100.0;
  p2.y = 0.0;
  
  scanf("%d", &n);
  printf("%f %f\n", p1.x, p1.y);
  kock(n, p1, p2);
  printf("%f %f\n", p2.x, p2.y);
  
  return 0;
}

