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

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

void koch(int,Point,Point);

int main(){

  int n;
  Point p1;
  Point p2;

  p1.x = 0.0;
  p1.y = 0.0;
  p2.x = 100.0;
  p2.y = 0.0;
  
  scanf("%d",&n);
  
  printf("%f %f\n",p1.x,p1.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 t;
  Point u;  
  
  if(n==0) return;

    s.x = (2.0 * p1.x + 1.0 * p2.x) / 3.0;
    s.y = (2.0 * p1.y + 1.0 * p2.y) / 3.0;
    
    t.x = (1.0 * p1.x + 2.0 * p2.x) / 3.0;
    t.y = (1.0 * p1.y + 2.0 * p2.y) / 3.0;

    u.x = (t.x - s.x) * cos( M_PI/3.0 ) - (t.y -s.y) * sin( M_PI/3.0 ) + s.x;
    u.y = (t.x - s.x) * sin( M_PI/3.0 ) + (t.y -s.y) * cos( M_PI/3.0 ) + 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);
}