#include<stdio.h>
#include<math.h>
#define N 6
  
typedef struct{
  double x;
  double y;
}XY;
  
void koch(int,XY,XY);
  
int main()
{
  int n,i;
  
  XY p1 = {0.0,0.0},p2 = {100.0,0.0};
  scanf("%d",&n);
  printf("%.8f %.8f\n",p1.x,p1.y);
  koch(n,p1,p2);
  printf("%.8f %.8f\n",p2.x,p2.y);
  
  return 0;
}
  
void koch(int n,XY p1,XY p2)
{
  XY s,t,u;
  
  if(n == 0) return;
  
  s.x = (2 * p1.x + 1 * p2.x) / 3;
  s.y = (2 * p1.y + 1 * p2.y) / 3;
  t.x = (1 * p1.x + 2 * p2.x) / 3;
  t.y = (1 * p1.y + 2 * p2.y) / 3;
  u.x = (t.x - s.x) * 1 / 2 - (t.y - s.y) * sqrt(3) / 2 + s.x;
  u.y = (t.x - s.x) * sqrt(3) / 2 + (t.y - s.y) * 1 / 2 + s.y;
  
  koch(n-1,p1,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,p2);
}