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

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

void kock(int, xy , xy );

int main() {
  int i,n;
  xy p1 = {0.0,0.0};
  xy p2 = {100.0,0.0};

  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, xy p1, xy p2){
  xy s,t,u;

  if(n == 0) return;

  // p1, p2 から s, t, u を計算
 
  s.x = (2*p1.x+1*p2.x)/3.0;
  s.y = (2*p1.y+1*p2.y)/3.0;

  t.x = (1*p1.x+2*p2.x)/3.0;
  t.y = (1*p1.y+2*p2.y)/3.0;

  u.x = (t.x-s.x)*0.5-(t.y-s.y)*(sqrt(3)/2)+s.x;
  u.y = (t.x-s.x)*(sqrt(3)/2)+(t.y-s.y)*0.5+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);

  return ;

}