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


typedef struct{
	double x;
	double y;
} C_T;	// coordinate


void Koch(int n, C_T p1, C_T p2)
{
	C_T s, t, u;


	if(n == 0)
		return;

	// p1, p2から三等分&正三角形の座標を求める
	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(60 * M_PI / 180) - (t.y - s.y) * sin(60 * M_PI / 180) + s.x;
	u.y = (t.x - s.x) * sin(60 * M_PI / 180) + (t.y - s.y) * cos(60 * M_PI / 180) + 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()
{
	int n;
	C_T p1, p2;


	scanf("%d", &n);

	p1.x = 0;
	p1.y = 0;
	p2.x = 100;
	p2.y = 0;


	printf("%.8f %.8f\n", p1.x, p1.y);
	Koch(n, p1, p2);
	printf("%.8f %.8f\n", p2.x, p2.y);

	return 0;
}
