#include<stdio.h>
#include<math.h>
typedef struct{
  double x,y;
}p;
void kock(int n, p p1,p p2){
  if(n==0) return;
  
  p s,t,u;
  double a = M_PI*60/180;

  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(a) - (t.y-s.y)*sin(a) + s.x;
  u.y = (t.x-s.x)*sin(a) + (t.y-s.y)*cos(a) + s.y;
 
  kock(n-1,p1,s);
  printf("%.5f %.5f\n",s.x,s.y);
  kock(n-1,s,u);
  printf("%.5f %.5f\n",u.x,u.y);
  kock(n-1,u,t);
  printf("%.5f %.5f\n",t.x,t.y);
  kock(n-1,t,p2);
}

int main(){
  int n;
  p p1,p2;
  p1.x = 0;
  p1.y = 0;
  p2.x = 100;
  p2.y = 0;
  
  scanf("%d",&n);
  printf("%.5f %.5f\n",p1.x,p1.y);
  kock(n,p1,p2);
  printf("%.5f %.5f\n",p2.x,p2.y);
  
  return 0;
}

