#include<stdio.h>
#include<math.h>
typedef struct{
  double x,y;
}Point;
void kock(int,Point,Point);
int main(){
  Point p1,p2;
  int n;
  scanf("%d",&n);
  p1.x=0.0;
  p1.y=0.0;
  p2.x=100.0;
  p2.y=0.0;
   printf("%.8f %.8f\n",p1.x,p1.y);
  kock(n,p1,p2);
   printf("%.8f %.8f\n",p2.x,p2.y);
  return 0;
}

void kock(int n,Point p1,Point p2){
  Point s,u,t;
  double angle = M_PI * 60.0 /180.0;
  if(n==0)return;
  s.x = (2.0 * p1.x + 1.0 * p2.x)/3;
  s.y = (2.0 * p1.y + 1.0 * p2.y)/3;
  t.x = (1.0 * p1.x + 2.0 * p2.x)/3;
  t.y = (1.0 * p1.y + 2.0 * p2.y)/3;
  u.x = (t.x - s.x)*cos(angle)-(t.y - s.y)*sin(angle)+s.x;
  u.y = (t.x - s.x)*sin(angle)+(t.y - s.y)*cos(angle)+s.y;
  kock(n-1,p1,s);
  printf("%.8f %.8f\n",s.x,s.y);
  kock(n-1,s,u);
  printf("%.8f %.8f\n",u.x,u.y);
  kock(n-1,u,t);
  printf("%.8f %.8f\n",t.x,t.y);
  kock(n-1,t,p2);
}

