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

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

void koch(int n, Point p1, Point p2){
  
  if (n == 0) return;
  
  Point s,t,u;
  
  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(M_PI/3)-(t.y - s.y)*sin(M_PI/3)+s.x;
  u.y = (t.x - s.x)*sin(M_PI/3)+(t.y - s.y)*cos(M_PI/3)+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);
}

int main(){
  int n;
  Point p1 = {0,0};
  Point p2 = {100,0};

  scanf("%d",&n);
  
  printf("%.8f %.8f\n",p1.x,p1.y);
 
  koch(n,p1,p2);
  
  printf("%.8f %.8f\n",p2.x,p2.y);
 
  return 0;

}

