#include <stdio.h>
#include <math.h>
using namespace std;

struct Point{ double x,y; };

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 %.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() {
  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;
}