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

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

void koch(int n, p a, p b){
  if(n == 0) return;

  p s, t, u;
  double theta = M_PI/3;

  s.x = (2.0 * a.x + 1.0 * b.x)/3.0;
  s.y = (2.0 * a.y + 1.0 * b.y)/3.0;
  t.x = (1.0 * a.x + 2.0 * b.x)/3.0;
  t.y = (1.0 * a.y + 2.0 * b.y)/3.0;
  u.x = (t.x - s.x) * cos(theta) - (t.y - s.y) * sin(theta) + s.x;
  u.y = (t.x - s.x) * sin(theta) + (t.y - s.y) * cos(theta) + s.y;

  koch(n-1, a, 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, b);
}

int main(){
  p a, b;
  int n;

  scanf("%d", &n);

  a.x = 0; a.y = 0;
  b.x = 100; b.y = 0;

  printf("%.8f %.8f\n", a.x, a.y);
  koch(n, a, b);
  printf("%.8f %.8f\n", b.x, b.y);

  return 0;
}

