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

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

void kock(int d,point p1,point p2)
{
	if(d==0) return;

	point s,t,u;

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

int main(void){
	int n;

	scanf("%d",&n);

  point p1 = {0,0} ,p2 = {100,0};

	printf("%lf %lf\n", p1.x, p1.y);
	kock(n, p1, p2);
	printf("%lf %lf\n", p2.x, p2.y);
	return 0;
}

