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

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

Point s,t,u;
double th;
void Kohho(Point,Point,int);


int main(){
  Point a,b;
  int n;

  scanf("%d",&n);

  a.x=0;
  a.y=0;
  b.x=100;
  b.y=0;

printf("%.8f %.8f\n",a.x,a.y);
Kohho(a,b,n);
printf("%.8f %.8f\n",b.x,b.y);

return 0;
}

void Kohho(Point a,Point b,int d){
  th=M_PI*60.0/180.0;

  if(d==0)return ;

s.x=(2.0*a.x+1.0*b.x)/3.0;
s.y=(2.0*a.y+1.0*b.y)/3.0;
t.x=(1.0*a.x+2.0*b.x)/3.0;
t.y=(1.0*a.x+2.0*b.y)/3.0;
u.x=(t.x-s.x)*cos(th)-(t.y-s.y)*sin(th)+s.x;
u.y=(t.x-s.x)*sin(th)+(t.y-s.y)*cos(th)+s.y;

Kohho(a,s,d-1);
printf("%.8f %.8f\n",s.x,s.y);
Kohho(s,u,d-1);
printf("%.8f %.8f\n",u.x,u.y);
Kohho(u,t,d-1);
printf("%.8f %.8f\n",t.x,t.y);
Kohho(t,b,d-1);
}