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

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

void kock(int,vertex,vertex);

int main()
{
  int n;
  vertex p1={0,0},p2={100,0};

  scanf("%d",&n);

  if(n > 6 || n < 0) return 0;

  printf("%.8lf %.8lf\n",p1.x,p1.y);

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

void kock(int n,vertex p1,vertex p2)
{
  vertex s,u,t;
  if(n == 0) return;

  s.x = (2 * p1.x + p2.x) / 3;

  s.y = (2 * p1.y + p2.y) / 3;

  t.x = (p1.x + 2 * p2.x) / 3;

  t.y = (p1.y + 2 * p2.y) / 3;

  u.x = (t.x - s.x) * cos(60 * M_PI/180.0) - (t.y - s.y) * sin(60 * M_PI/180) + s.x;

  u.y = (t.x - s.x) * sin(60 * M_PI/180.0) + (t.y - s.y) * cos(60 * M_PI/180) + s.y;

  
  kock(n-1,p1,s);
  printf("%.8lf %.8lf\n",s.x,s.y);
  kock(n-1,s,u);
  printf("%.8lf %.8lf\n",u.x,u.y);
  kock(n-1,u,t);
  printf("%.8lf %.8lf\n",t.x,t.y);
  kock(n-1,t,p2);

}

