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

#define PI 3.141592653

typedef struct point{
  double x;
  double y;
}Point;

/* Prototype Declaration */
void kock(int, Point, Point);

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

  scanf("%d", &n);

  p1.x = 0.0;
  p1.y = 0.0;
  p2.x = 100.0;
  p2.y = 0.0;

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

  kock(n, p1, p2);

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

  return 0;
}

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

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

  u.x = (t.x - s.x) * cos(PI/3.0) - (t.y - s.y) * sin(PI/3.0) + s.x;
  u.y = (t.x - s.x) * sin(PI/3.0) + (t.y - s.y) * cos(PI/3.0) + 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);
	    
}