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



struct Point{
  double x;
  double y;
};

void gohho(int d,struct Point p1,struct Point p2);
struct Point s,t,u;
double k;

int main(){
  struct Point p1,p2;
  int n;
  scanf("%d",&n);
  p1.x =0;
  p1.y = 0;
  p2.x = 100;
  p2.y = 0;

  printf("%.8f %.8f\n",p1.x,p1.y);
  gohho(n,p1,p2);
  printf("%.8f %.8f\n",p2.x,p2.y);
  return 0;
}



void gohho(int d,struct Point p1, struct Point p2){
  struct Point s,t,u;
  double k;

  if(d == 0)return;

  k = M_PI*60.0/180.0;

  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(k) - (t.y - s.y) *sin(k) +s.x;
  u.y = (t.x - s.x) * sin(k) + (t.y - s.y) *cos(k) +s.y;

  gohho(d-1,p1,s);
  printf("%.8f %.8f\n",s.x,s.y);
  gohho(d-1,s,u);
  printf("%.8f %.8f\n",u.x, u.y);
  gohho(d - 1,u,t);
  printf("%.8f %.8f\n",t.x,t.y);
  gohho(d-1,t,p2);
}

