#include<stdio.h>
#include<math.h>
#define N 6

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

void koch(int,Point,Point);
#define PI 3.141592653589793
double radian = 60 * (PI/180.0);

int main()
{
  int n,i;

  Point p1,p2;
  p1.x=0,p1.y=0,p2.x=100,p2.y=0;
  scanf("%d",&n);
  printf("%.8f %.8f\n",p1.x,p2.y);
  koch(n,p1,p2);
  printf("%.8f %.8f\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+p2.x)/3;
  s.y=(2*p1.y+p2.y)/3;
  t.x=(p1.x+2*p2.x)/3;
  t.y=(p1.y+2*p2.y)/3;
  u.x=(t.x-s.x)*cos(radian)-(t.y-s.y)*sin(radian)+s.x;
  u.y=(t.x-s.x)*sin(radian)+(t.y-s.y)*cos(radian)+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);
}