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

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

void koch(int n, Point a, Point b)
{
	if(n==0) return;
	Point s, t, u;
	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()
{
	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;
}

