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

typedef struct xy{
  double x,y;
}XY;

void Koch(int n,XY p1,XY p2){
  if(n == 0) return;
  XY s,t,u;
  double tmp = M_PI/3.0;

  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(tmp) - (t.y - s.y)*sin(tmp) + s.x;
  u.y = (t.x - s.x)*sin(tmp) + (t.y - s.y)*cos(tmp) + 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);
}
  
int main()
{
  int n;
  XY 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;
}


