#include<stdio.h>

#include<math.h>

struct Point{
	double x;
	double y;
};

void kock(int n, struct Point p1, struct Point p2){
	if( n==0 ){ return; }
	struct Point s, t, u;
	double rad = M_PI * 60.0 / 180.0;
	
	s.x = (2.0 * p1.x + 1.0 * p2.x) / 3.0;
	s.y = (2.0 * p1.y + 1.0 * p2.y) / 3.0;
	t.x = (1.0 * p1.x + 2.0 * p2.x) / 3.0;
	t.y = (1.0 * p1.y + 2.0 * p2.y) / 3.0;
	u.x = (t.x - s.x) * cos(rad) - (t.y - s.y) * sin(rad) + s.x;
	u.y = (t.x - s.x) * sin(rad) + (t.y - s.y) * cos(rad) + 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){
	int n;
	struct Point p1, p2;
	scanf("%d", &n);
	
	p1.x = 0;
	p1.y = 0;
	p2.x = 100;
	p2.y = 0;
	
	printf("%.8f %0.8f\n", p1.x, p1.y);
	
	kock(n, p1, p2);
	
	printf("%.8f %0.8f\n", p2.x, p2.y);
	
	return 0;
}
