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

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

void kock(int, point, point);


int main() {
  point p1 = {0, 0}, p2 = {100, 0};
  int n;

  scanf("%d", &n);

  printf("%lf %lf\n", p1.x, p1.y);

  kock(n, p1, p2);

  printf("%lf %lf\n", p2.x, p2.y);

  return 0;
}



void kock(int n, point p1, point p2) {
  point s, t, u;
  double kaku;

  kaku = M_PI / 3;

  if (n == 0) return;

  s.x = (2 * p1.x + 1 * p2.x) / 3;
  s.y = (2 * p1.y + 1 * p2.y) / 3;
  t.x = (1 * p1.x + 2 * p2.x) / 3;
  t.y = (1 * p1.y + 2 * p2.y) / 3;
  u.x = (t.x - s.x) * cos(kaku) - (t.y - s.y) * sin(kaku) + s.x;
  u.y = (t.x - s.x) * sin(kaku) + (t.y - s.y) * cos(kaku) + s.y;

  kock(n-1, p1, s);
  printf("%lf %lf\n", s.x, s.y);

  kock(n-1, s, u);
  printf("%lf %lf\n", u.x, u.y);

  kock(n-1, u, t);
  printf("%lf %lf\n", t.x, t.y);

  kock(n-1, t, p2);
}

