#include<stdio.h>
#include<math.h>
typedef struct{
  double x;
  double y;
}P;

void koch(int,P,P);

int main(){
  int n;
  P cd,cd2;
  scanf("%d",&n);
  cd.x = 0;
  cd2.x = 100;
  cd.y = 0;
  cd2.y = 0;
  printf("%.8f %.8f\n",cd.x,cd.y);
  koch(n,cd,cd2);
  printf("%.8f %.8f\n",cd2.x,cd2.y);

  return 0;
}

void koch(int n,P p1,P p2){
  P 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 * 60.0 / 180.0) - (t.y - s.y) * sin(M_PI * 60.0 / 180.0) + s.x;
  u.y = (t.x - s.x) * cos(M_PI * 60.0 / 180.0) - (t.y - s.y) * sin(M_PI * 60.0 / 180.0) + s.y;
  koch(n-1,p1,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,p2);
}
  

