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

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

void koch(int,Point,Point);

int main(int argc, char const *argv[]) {

  Point a,b; // a(0,0) b(100,0)??????
  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;
}

void koch(int n, Point a, Point b){

  if( n == 0 ){
    return;
  }

  Point s,t,u;
  double th = M_PI * 60.0 / 180.0;

  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);

}