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

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

void koch(int n, point p1,  point p2)
{
	if(n==0)
	{
		return ; 
	}

	point s, t, u;
	double th =  60.0 * M_PI /180; //度からラジアンへ単位を変換
	
	s.x = (2.0*p1.x+1.0*p2.x)/3;
	s.y = (2.0*p1.y+1.0*p2.y)/3;
	t.x = (1.0*p1.x+2.0*p2.x)/3;
	t.y = (1.0*p1.y+2.0*p2.y)/3;
	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, p1, 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, p2);
	

}
int main(void)
{
	point p1, p2;
	int n;
	
	scanf("%d", &n);
	
	p1.x = 0;
	p1.y = 0;
	p2.x = 100;
	p2.y = 0;
	
	
	printf("%.8f %.8f\n", p1.x, p1.y);
	koch(n,p1,p2);
	printf("%.8f %.8f\n", p2.x, p2.y);
	
	return 0;
}
