#include<stdio.h>
#include<math.h>
typedef struct endPoint{
  double x;
  double y;
}endpoint;
void knock(int,endpoint,endpoint);
int main(){
  int n;
  endpoint p1,p2;
  p1.x=0.0;
  p1.y=0.0;
  p2.x=100.0;
  p2.y=0.0;

  scanf("%d",&n);
  printf("%.8f %.8f\n",p1.x,p1.y);
  knock(n, p1, p2);
  printf("%.8f %.8f\n",p2.x,p2.y);
  return 0;
}
void knock(int n,endpoint p1,endpoint p2){
  endpoint s,l,u;
  if(n==0)
    return ;

  s.x =(2*p1.x+1*p2.x)/3.0;
  s.y =(2*p1.y+1*p2.y)/3.0;
  l.x =(1*p1.x+2*p2.x)/3.0;
  l.y =(1*p1.y+2*p2.y)/3.0;
  u.x=(l.x-s.x)*cos(M_PI/3)-(l.y-s.y)*sin(M_PI/3)+s.x;
  u.y=(l.x-s.x)*sin(M_PI/3)+(l.y-s.y)*cos(M_PI/3)+s.y;

  knock(n-1,p1,s);
  printf("%.8f %.8f\n",s.x, s.y);
  knock(n-1,s,u);
  printf("%.8f %.8f\n",u.x, u.y); 
  knock(n-1,u,l);
  printf("%.8f %.8f\n",l.x, l.y);
  knock(n-1,l,p2);
}