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

void kock(int, P, P);

P p1, p2;

int main(){
  int n;

  p1.x = 0;
  p1.y = 0;

  p2.x = 100;
  p2.y = 0;

  scanf("%d",&n);

  printf("%f %f\n",p1.x,p1.y);
 
  kock(n,p1,p2);

  printf("%f %f\n",p2.x,p2.y);

  return 0;
}
void kock(int n, P p1, P p2){
  P s,t,u;

  if (n == 0) return;
  
  s.x = (2 * p1.x + p2.x) / 3;
  s.y = (2 * p1.y + p2.y) / 3;
  t.x = (p1.x + 2 * p2.x) / 3;
  t.y = (p1.x + 2 * p2.y) / 3;  

  u.x = fabs((t.x - s.x) / 2 - (t.y - s.y) * (sqrt(3)/2) + s.x);
  u.y = fabs((t.x - s.x) * (sqrt(3)/2) + (t.y - s.y) / 2 + s.y);
  
  kock(n-1, p1, s);
  printf("%f %f\n",s.x,s.y);
  kock(n-1, s, u);
  printf("%f %f\n", u.x,u.y);
  kock(n-1, u, t);
  printf("%f %f\n", t.x, t.y);
  kock(n-1, t, p2);
}