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

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

void kock(int,Point,Point);

int main(void){
  int n;
  Point p1={0,0},p2={100,0};
  
  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,u,t;
  
  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("%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);
}

