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

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

int kock(int n, point p1, point p2) {
  point s, u, t;
  double rad = 60 * M_PI / 180;

  if (n == 0) return n;
  else {
    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(rad) - (t.y - s.y) * sin(rad) + s.x;
    u.y = (t.x - s.x) * sin(rad) + (t.y - s.y) * cos(rad) + 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);

    return n;
  }
}

int main() {
  int n;
  point p1, p2;

  p1.x = 0.0;
  p1.y = 0.0;
  p2.x = 100.0;
  p2.y = 0.0;

  scanf("%d", &n);

  printf("%f %f\n", p1.x, p1.y);
  kock(n, p1, p2);
  printf("%f %f\n", p2.x, p2.y);

  return 0;
}