#include <stdio.h>
#include <math.h>
 
typedef struct{ 
    double x,y;
}Point;
void koch(int, Point, Point);
 
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;
}
 
void koch(int n, Point a, Point b){
    Point s,t,u;
    double th;
    if(n==0) return;
    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);
}