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

#define PI 3.141592

struct xy{
  double x;
  double y;
};

double cos(double x);


int kock(int,struct xy,struct xy);

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

  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;
}

int kock(int n,struct xy p1,struct xy p2){
  struct xy s,t,u;
  
  if(n==0) return 0;
  
  s.x=(2*p1.x+1*p2.x)/3;
  s.y=(2*p1.y+1*p2.y)/3;
  kock(n-1,p1,s);
  printf("%f %f\n",s.x,s.y);

  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(PI/3)-(t.y-s.y)*sin(PI/3)+s.x;
  u.y=(t.x-s.x)*sin(PI/3)+(t.y-s.y)*cos(PI/3)+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);

}