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

struct Point {
    double x;
    double y;
};

void koch(int n, struct Point a, struct Point b) {
    if (n == 0) {
        return;
    }
    struct Point s, u, t;
    double th = M_PI * 60.0 / 180.0;  //转弧度
    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() {
    struct Point p1, p2;
    int n = 0;
    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;
}
