#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 %.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;
}

