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

typedef struct Node{
  double x;
  double y;
} Point;


void kock(int, Point ,Point);

int main(){
  int n;
  Point p1;
  Point p2;

  p1.x = 0;
  p1.y = 0;
  p2.x = 100;
  p2.y = 0;

  scanf("%d",&n);
  printf("%f %f\n",p1.x,p1.y);

  kock(n,p1,p2);
  printf("%f %f\n",p2.x,p2.y);
  return 0;
}
void kock(int n,Point p1,Point p2){
  Point s;
  Point t;
  Point u;

  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(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("%f %f\n",s.x,s.y);

  kock(n-1,s,u);
  printf("%f %f\n",u.x,u.y);

  kock(n-1,u,t);
  printf("%f %f\n",t.x,t.y);
  
  kock(n-1,t,p2);
}

