#include <stdio.h>
#include <math.h>
 
typedef struct{
  double x;
  double y;
} Point;
 
void koch(int, Point, Point);
 
int main(int argc, char const *argv[]) {
 
  Point p1,p2; 
  int n;
 
  scanf("%d",&n);
 
  p1.x = 0;
  p1.y = 0;
  p2.x = 100;
  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){
 
  if( n == 0 ) return;
 
  Point s,t,u;
  double th = M_PI * 60.0 / 180.0;
 
  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) * cos(th) - (t.y-s.y) * sin(th) + s.x;
  u.y = (t.x-s.x) * sin(th) + (t.y-s.y) * cos(th) + 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);
 
}