#include <stdio.h>
#include <math.h>
 
#define PI 3.14159265359
 
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);
}