#include<stdio.h>
#include<math.h>
typedef struct point{
  double x,y;
}point;
void kock(int,point,point);
int main(){
  int n;
  point p1={0,0}, p2={100,0};
  scanf("%d",&n);
  printf("%lf %lf\n",p1.x,p1.y);
  kock(n,p1,p2);
  printf("%lf %lf\n",p2.x,p2.y);
  return 0;
}
void kock(int n,point p1,point p2){
  point s,t,u;
  if(n == 0) return;
  s.x = (2 * p1.x + 1 * p2.x) / 3;
  s.y = (2 * p1.y + 1 * p2.y) / 3;
  t.x = (1 * p1.x + 2 * p2.x) / 3;
  t.y = (1 * p1.y + 2 * p2.y) / 3;
  u.x = (t.x - s.x) * cos(2/3*M_PI) - (t.y - s.y) * sin(2/3*M_PI) + s.x;
  u.y = (t.x - s.x) * sin(2/3*M_PI) + (t.y - s.y) * cos(2/3*M_PI) + s.y;
  kock(n-1, p1, s);
  printf("%.8lf %.8lf\n",s.x,s.y);
  kock(n-1, s, u);
  printf("%.8lf %.8lf\n",u.x,u.y);
  kock(n-1, u, t);
  printf("%.8lf %.8lf\n",t.x,t.y);
  kock(n-1, t, p2);
}