#include <stdio.h>          // printf(), scanf()
#include <math.h>           // M_PI, sin(), cos()

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

void
koch(int n, point a, point b)
{
	point s, t, u;

	if (n == 0)
		return;

	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(int argc, char** argv)
{
	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;
}