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

struct point{double x,y;};

void koch(int n, struct point p1, struct point p2){
  struct point  a,b,c;
  double th=M_PI/3;

  if(n==0) return;
    
  a.x=(2.0*p1.x+1.0*p2.x)/3.0;
  a.y=(2.0*p1.y+1.0*p2.y)/3.0;
  b.x=(1.0*p1.x+2.0*p2.x)/3.0;
  b.y=(1.0*p1.y+2.0*p2.y)/3.0;
  c.x=(b.x-a.x)*cos(th)-(b.y-a.y)*sin(th)+a.x;
  c.y=(b.x-a.x)*sin(th)+(b.y-a.y)*cos(th)+a.y;

  koch(n-1,p1,a);
  printf("%.8f %.8f\n",a.x,a.y);
  koch(n-1,a,c);
  printf("%.8f %.8f\n",c.x,c.y);
  koch(n-1,c,b);
  printf("%.8f %.8f\n",b.x,b.y);
  koch(n-1,b,p2);

}

int main(){
  int n;
  struct point p1,p2;
  
  scanf("%d",&n);

  p1.x=0;
  p1.y=0;
  p2.x=100;
  p2.y=0;
  
  printf("%.8f %.8f\n",p1.x,p1.y);
  koch(n,p1,p2);
  printf("%.8f %.8f\n",p2.x,p2.y);

  return 0;
}

