#include<stdio.h>
#include<math.h>
typedef struct{
  double x;
  double y;
} P;
void kock(int,P,P);

int main()
{
  int n;
  P p1={0.0,0.0}, p2={100.0,0.0};

  scanf("%d",&n);
  
  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, P p1, P p2) 
{
  P s,t,u;
  double r=M_PI/3.0;

  if(n==0) return;

  s.x = (2.0*p1.x+p2.x)/3.0;
  s.y = (2.0*p1.y+p2.y)/3.0;
  t.x = (p1.x+2.0*p2.x)/3.0;
  t.y = (p1.y+2.0*p2.y)/3.0;
  u.x = (t.x-s.x)*cos(r)-(t.y-s.y)*sin(r)+s.x;
  u.y = (t.x-s.x)*sin(r)+(t.y-s.y)*cos(r)+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);
}