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

typedef struct{
  double x;
  double y;
}Point;

//        u 
//       / \
//  a---s   t---b

void koch(int n, Point a, Point b){
  Point s,t,u;
  double th = M_PI / 3.0; //60degree
  
  if(n == 0) return;

  s.x = a.x + ((b.x - a.x) / 3.0 * 1.0);
  s.y = a.y + ((b.y - a.y) / 3.0 * 1.0);
  t.x = a.x + ((b.x - a.x) / 3.0 * 2.0);
  t.y = a.y + ((b.y - a.y) / 3.0 * 2.0);
  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;
  // (cos60 -sin60)(x) 回転行列
  // (sin60  cos60)(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(){
  int n;
  Point a,b;
  a.x = 0;
  a.y = 0;
  b.x = 100;
  b.y = 0;

  scanf("%d",&n);

  printf("%.8f %.8f\n", a.x, a.y);
  koch(n,a,b);
  printf("%.8f %.8f\n", b.x, b.y);
  
  return 0;
}

