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

struct Point {double x,y;};

void koch(int n,struct Point a,struct Point b){
  if(n == 0) return;
  struct 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 %.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,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);
  koch(n,a,b);
  printf("%.8f %.8f\n",b.x,b.y);

  return 0;
}
  

