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

struct Point {
	double x, y;
};

void kock(int n, struct Point p1, struct Point p2)
{
	if(n == 0) return;
	
	struct Point s, t, u;
	double th = M_PI * 60 / 180;
	
	s.x = (2*p1.x+1*p2.x)/3;
	s.y = (2*p1.y+1*p2.y)/3;
	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(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;
	
	kock(n-1, p1, s);
	printf("%.8f %.8f\n", s.x, s.y);
	kock(n-1, s, u);
	printf("%.8f %.8f\n", u.x, u.y);
	kock(n-1, u, t);
	printf("%.8f %.8f\n", t.x, t.y);
	kock(n-1, t, p2);
}

int main(void)
{
	struct 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);
	kock(n, p1, p2);
	printf("%.8f %.8f\n", p2.x, p2.y);
	
	return 0;
}
