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

struct Point{
    double x;
    double y;
};

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

    s.x = (2.0 * p1.x + 1.0 * p2.x) / 3.0;
    s.y = (2.0 * p1.y + 1.0 * p2.y) / 3.0;
    t.x = (1.0 * p1.x + 2.0 * p2.x) / 3.0;
    t.y = (1.0 * p1.y + 2.0 * p2.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,p1,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,p2);
}

int main(){
    struct 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);
    koch(n,p1,p2);
    printf("%.8f %.8f\n",p2.x,p2.y);

    return 0;
}
