#include<stdio.h>
#include<math.h>
 
struct Point{
  double x, y;
};
 
void koch(int n, Point a, Point b){
  if(n == 0) return;
 
  Point s, t, u;
  double th = M_PI * 60.0 / 180.0;
 
  s.x = (2.0 * a.x + 1.0 * b.x) / 3.0;
  s.y = (2.0 * a.y + 1.0 * b.y) / 3.0;
  t.x = (1.0 * a.x + 2.0 * b.x) / 3.0;
  t.y = (1.0 * a.y + 2.0 * b.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, a, 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, b);
}
 
int main(){
  Point a, b;
  int n;
 
  scanf("%d",&n);
 
  a.x = 0;
  a.y = 0;
  b.x = 100;
  b.y = 0;
 
  printf("%.8f %.8f\n",a.x,a.y);
  koch(n, a, b);
  printf("%.8f %.8f\n",b.x,b.y);
 
  return 0;
}