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

typedef struct{
  double x;
  double y;
}Point;

void koch(int,Point,Point);

int main(){
  int n;
  scanf("%d",&n);
  Point endleft,endright;
  endleft.x=0;
  endleft.y=0;
  endright.x=100;
  endright.y=0;
  printf("%.8f %.8f\n",endleft.x,endleft.y);
  koch(n,endleft,endright);
  printf("%.8f %.8f\n",endright.x,endright.y);
    
  return 0;
}

void koch(int n,Point p1,Point p2){
  if(n==0)return;
  Point s,t,u;
  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(M_PI/3.0)-(t.y-s.y)*sin(M_PI/3.0)+s.x;
  u.y=(t.x-s.x)*sin(M_PI/3.0)+(t.y-s.y)*cos(M_PI/3.0)+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);
}

