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

typedef struct {double x,y;}Point;

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);
}

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;
}


