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

void koch(int,POINT,POINT);

int main(){
  POINT p1,p2;
  int n;

  scanf("%d",&n);

  p1.x=0;
  p1.y=0;
  p2.x=100;
  p2.y=0;

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

  return 0;
}

void koch(int n,POINT p1,POINT p2){
  POINT s;
  POINT u;
  POINT t;
  double rad;

  if(n==0) return;

  rad=60.0*M_PI/180.0;
  s.x=(2.0*p1.x+1.0*p2.x)/3;
  s.y=(2.0*p1.y+1.0*p2.y)/3;
  t.x=(1.0*p1.x+2.0*p2.x)/3;
  t.y=(1.0*p1.y+2.0*p2.y)/3;
  u.x=(t.x-s.x)*cos(rad)-(t.y-s.y)*sin(rad)+s.x;
  u.y=(t.x-s.x)*sin(rad)+(t.y-s.y)*cos(rad)+s.y;

  koch(n-1,p1,s);
  printf("%f %f\n",s.x,s.y);
  koch(n-1,s,u);
  printf("%f %f\n",u.x,u.y);
  koch(n-1,u,t);
  printf("%f %f\n",t.x,t.y);
  koch(n-1,t,p2);
}

