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


struct Point { double x, y; };
double pi = 3.14159265357989;



void koch(int n, Point p1, Point p2) {
	if (n == 0) return;
	Point s, t, u;
	double th = pi / 3;
	s.x = (2 * p1.x + p2.x) / 3;
	s.y = (2 * p1.y + p2.y) / 3;
	t.x = (p1.x + 2 * p2.x) / 3;
	t.y = (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;

	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() {
	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;
}
