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

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

void kock(int n, Point p1, Point p2);

int main(int argc, char** argv)
{
	Point p1, p2;
	int n;

	scanf("%d", &n);
	p1.x = 0, p1.y = 0;
	p2.x = 100, p2.y = 0;

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

	return 0;
}

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

    double theta = M_PI * 1/3;

    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(theta) - (t.y-s.y) * sin(theta) + s.x;
    u.y = (t.x - s.x) * sin(theta) + (t.y-s.y) * cos(theta) + s.y;

    kock(n-1, p1, s);
    printf("%.8f %.8f\n", s.x, s.y);
    kock(n-1, s, u);
    printf("%.8f %.8f\n", u.x, u.y);
    kock(n-1, u, t);
    printf("%.8f %.8f\n", t.x, t.y);
    kock(n-1, t, p2);
}

