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

#define PI 3.14

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

void kock(int, Point, Point);

main(){
	int n;
	Point p1 = { 0, 0 }, p2 = { 100, 0 };

	scanf("%d", &n);

	printf("%f %f\n", 0, 0);
	kock(n, p1, p2);
	printf("%f %f\n", (double)100, 0);

	return 0;
}

void kock(int n, Point p1, Point p2){
	Point s, u, t;
	if (n == 0) return;

	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(PI / 3) - (t.y - s.y)*sin(PI / 3) + s.x;
	u.y = (t.x - s.x)*sin(PI / 3) - (t.y - s.y)*cos(PI / 3) + s.y;

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