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

void koch(int,POINT,POINT);

int main(){
  POINT a,b;
  int n;
  scanf("%d",&n);
  a.x = 0;
  a.y = 0;
  b.x = 100;
  b.y = 0;
  printf("%.8f %.8f\n",a.x,a.y);
  koch(n,a,b);
  printf("%.8f %.8f\n",b.x,b.y);
}

void koch(int n,POINT a,POINT b){
  POINT s,t,u;
  double th;
  if(n == 0)return;
  s.x = (2 * a.x + 1 * b.x) / 3;
  s.y = (2 * a.y + 1 * b.y) / 3;
  t.x = (1 * a.x + 2 * b.x) / 3;
  t.y = (1 * a.y + 2 * b.y) / 3;
  u.x = (t.x - s.x) * cos(th) - (t.y - s.y) * sin(th) + s.x;
  u.y = (t.x - s.x) * sin(th) - (t.y - s.y) * cos(th) + s.y;
  koch(n-1,a,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,b);
}

