#include <stdio.h>
typedef struct a{
  double x;
  double y;
}Point;
void koch(int,Point,Point);
int main(){
  Point p1,p2;
  int n;
  p1.x =0;
  p1.y = 0;
  p2.x =100;
  p2.y = 0;
  scanf("%d",&n);
  printf("%f %f\n",p1.x,p1.y);
  koch(n,p1,p2);
   printf("%f %f\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*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)*0.5 - (t.y-s.y)*0.866025+s.x;
  u.y = ((t.x-s.x)*0.866025) + ((t.y-s.y)*0.5)+s.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);
}

