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

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

void kock(int, Point, Point);

int main()
{
  Point p1 = {0.0, 0.0}, p2 = {100.0, 0.0};
  int n;

  scanf("%d", &n);

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

  return 0;
}

void kock(int n, Point p1, Point p2)
{
  Point s, t, u;

  if(n == 0)
    return ;

  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(M_PI/3)-(t.y-s.y)*sin(M_PI/3)+s.x;
  u.y = (t.x-s.x)*sin(M_PI/3)+(t.y-s.y)*cos(M_PI/3)+s.y;

  kock(n-1, p1, s);
  printf("%f\t%f\n", s.x, s.y);
  kock(n-1, s, u);
  printf("%f\t%f\n", u.x, u.y);
  kock(n-1, u, t);
  printf("%f\t%f\n", t.x, t.y);
  kock(n-1, t, p2);

}