#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 = 0.0;
  p1.y = 0.0;
  p2.x = 100.0;
  p2.y = 0.0;
  
  koch(n,p1,p2);

  return 0;
}

void koch(int n, Point p1, Point p2){
  Point s,u,t;
  double deg = 60;
  double rad = deg * M_PI / 180.0;
  if(n == 0) return;
  
  s.x = (2*p1.x+1*p2.x)/3.0;
  s.y = (2*p1.y+1*p2.y)/3.0;
  t.x = (1*p1.x+2*p2.x)/3.0;
  t.y = (1*p1.y+2*p2.y)/3.0;
  u.x = (t.x-s.x) * cos(rad) - (t.y-s.y) * sin(rad) + s.x;
  u.y = (t.x-s.x) * sin(rad) + (t.y-s.y) * cos(rad) + s.y;

  printf("%f %f\n",p1.x ,p1.y);
  koch(n-1, p1, s);
  printf("%f %f\n",s.x ,s.y);
  koch(n-1, s, u);
  printf("%f %f\n",u.x, u.y);
  koch(n-1, u, t);
  printf("%f %f\n",t.x, t.y);
  koch(n-1, t, p2);
  printf("%f %f\n",p2.x ,p2.y);
}