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

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

void koch(int n, Point a, Point b){
  Point s, t, u;
  double th = M_PI * 60.0 / 180.0;
  
  if( n == 0 ) return;

  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(th) - ( t.y - s.y ) * sin(th) + s.x;
  u.y = ( t.x - s.x ) * sin(th) + ( t.y - s.y ) * cos(th) + 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(){
  Point 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;
}

