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

typedef struct{
  double x,y;
}Point;

void koch(int n, Point a,Point b){
  Point s,t,u;
  double th = 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(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;
}

