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


struct Point{
  double x;
  double y;
};

void kohho(int n, struct Point a, struct Point b)
{
  struct Point s,t,u;
  double k = M_PI*60.0 / 180.0;
  
  if(n==0)return;

  s.x = ( 2.0 * a.x + 1.0*b.x)/3.0;
  s.y = ( 2.0 * a.y + 1.0*b.y)/3.0;
  t.x = ( 1.0 * a.x + 2.0*b.x)/3.0;
  t.y = ( 1.0 * a.y + 2.0*b.y)/3.0;
  u.x = ( t.x - s.x )*cos(k)-(t.y-s.y)*sin(k)+s.x;
  u.y = ( t.x - s.x )*sin(k)+(t.y-s.y)*cos(k)+s.y;

  kohho(n-1,a,s);
  printf("%.8f %.8f\n",s.x,s.y);
  kohho(n-1,s,u);
  printf("%.8f %.8f\n",u.x,u.y);
  kohho(n-1,u,t);
  printf("%.8f %.8f\n",t.x,t.y);
  kohho(n-1,t,b);
}

int main()
{
  struct Point a,b;
  int n;

  scanf("%d",&n);
  a.x = 0;
  a.y = 0;
  b.x = 100;
  b.y = 0;


  printf("%.8f %.8f\n",a.x,a.y);
  kohho(n,a,b);
  printf("%.8f %.8f\n",b.x,b.y);

  return 0;
}

  

