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

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

void koch (int n, Point a, Point b)
{
	if(n==0)
	{
		return;
	}
	Point s, t, u;
	double th = M_PI*60.0/180.0;
	
	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.y+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;
	
	koch(n-1,a,s);
	printf("%.8f %.8f\n",s.x,s.y);
	koch(n-1,s,u);
	printf("%.8f %.8f\n",u.x,u.y);
	koch(n-1,u,t);
	printf("%.8f %.8f\n",t.x,t.y);
	koch(n-1,t,b);

}

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);
	koch(n,a,b);
	printf("%.8f %.8f\n",b.x,b.y);
	return 0;

}

