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

typedef struct{
  double x,y;
}Point;

void koch(int n, Point p1, Point p2){
  Point s, t, u;
  double th = M_PI * 60 / 180;
  
  if(n == 0) return;
  
  s.x = (2 * p1.x + 1 * p2.x) / 3;
  s.y = (2 * p1.y + 1 * p2.y) / 3;
  t.x = (1 * p1.x + 2 * p2.x) / 3;
  t.y = (1 * p1.y + 2 * p2.y) / 3;
  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);
}


int main(){
  Point a,b;
  int n;

  a.x = 0;
  a.y = 0;
  b.x = 100;
  b.y = 0;
  
  scanf("%d",&n);

  printf("%.8f %.8f\n",a.x,a.y);
  koch(n,a,b);
  printf("%.8f %.8f\n",b.x,b.y);

  return 0;
}
  

