#include <stdio.h>
#include <math.h>
 
typedef struct{
  double x;
  double y;
} Point;
 
void Koch(int, Point, Point);
 
int main()
{
  int n;
  Point p1, p2;
 
  scanf("%d", &n);
 
  p1.x = 0;
  p2.x = 100;
  p1.y = 0;
  p2.y = 0;
 
  printf("%.8f %.8f\n", p1.x, p1.y);
  Koch(n, p1, p2);
  printf("%.8f %.8f\n", p2.x, p2.y);
 
  return 0;
}
 
void Koch(int n, Point p1, Point p2)
{
  Point s, t, u;
   
  if( n == 0 ) return;
 
  s.x = (2.0 * p1.x + 1.0 * p2.x) / 3;
  s.y = (2.0 * p1.y + 1.0 * p2.y) / 3;
  t.x = (1.0 * p1.x + 2.0 * p2.x) / 3;
  t.y = (1.0 * p1.y + 2.0 * p2.y) / 3;
  u.x = (t.x - s.x) * cos(M_PI/3) - (t.y - s.y) * sin(M_PI/3) + s.x;
  u.y = (t.x - s.x) * sin(M_PI/3) + (t.y - s.y) * cos(M_PI/3) + s.y;
 
  Koch(n-1, p1, 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, p2);
   
}