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

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

//XY p1 = {0,0}, p2 = {100,0};
//XY s,t,u;

void kock(int,XY,XY);

int main() {
  int n;
   XY p1 = {0,0}, p2 = {100,0};
  
  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,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)*cos(M_PI/3) - (t.y - s.y)*sin(M_PI/3) + s.x;
  u.y = (t.x - s.x)*sin(M_PI/3) + (t.y - s.y)*cos(M_PI/3) + 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);
}

