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

typedef struct {
  double x,y;
}Point;

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

  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(th)-(t.y-s.y)*sin(th)+s.x;
  u.y = (t.x-s.x)*sin(th)+(t.y-s.y)*cos(th)+s.y;
  
  koch (n-1 , a, s);
  printf("%.8f %.f\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,b);
}

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

  scanf("%d",&n);
  a.x = 0;
  a.y = 0;
  b.x = 1.0;
  b.y = 0;
  printf("%.8f %.8f\n",a.x,a.y);
  koch(n,a,b);
   printf("%.8f %.8f\n",b.x,b.y);
  return 0;
}

