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

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

void kock(int n, point p1, point p2) {
	point t, s, u;

	if (n == 0) return;
	
	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(M_PI / 3) - (t.y - s.y) * sin(M_PI / 3) + s.x;
	u.y = (t.x - s.x) * sin(M_PI / 3) + (t.y - s.y) * cos(M_PI / 3) + s.y;
	

	kock(n-1, p1, s);
	printf("%f %f\n", s.x, s.y);
	kock(n-1, s, u);
	printf("%f %f\n", u.x, u.y);
	kock(n-1, u, t);
	printf("%f %f\n", t.x, t.y);
	kock(n-1, t, p2);
	
	
	return;
}

int main(void)
{
	int n;
	point p1, p2;
	p1.x = p1.y = 0;
	p2.x = 100;
	p2.y = 0;

	scanf("%d", &n);
	printf("%f %f\n", p1.x, p1.y);
	kock(n, p1, p2);
	printf("%f %f\n", p2.x, p2.y);
	
	return 0;
}