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

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

void koch(int, P, P);

int main()
{
  P 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;
}

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

  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);
}

