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

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

void KOCK(int n, Point p1, Point p2){
  Point s,t,u;

  if(n == 0) return;

  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);

  KOCK(n-1,p1,s);
  printf("%.8f %.8f\n",s.x,s.y);
  
  KOCK(n-1,s,u);
  printf("%.8f %.8f\n",u.x,u.y);
  
  KOCK(n-1,u,t);
  printf("%.8f %.8f\n",t.x,t.y);
  
  KOCK(n-1,t,p2); 
}

int main(){
  Point P1,P2;
  int n;

  P1.x = 0;
  P1.y = 0;
  P2.x = 100;
  P2.y = 0;

  scanf("%d",&n);
  
  printf("%.8f %.8f\n",P1.x,P1.y);
  KOCK(n,P1,P2);
  printf("%.8f %.8f\n",P2.x,P2.y);

  return 0;
}

