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

#define RAD60 60*M_PI/180

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

void kock(int, Point, Point);


int main() {
  int n;
  Point p1={0, 0}, p2={100, 0};
  
  scanf( "%d" , &n );
  printf( "%f %f\n" , p1.x , p1.y );
  kock(n, p1, p2);
  printf( "%f %f\n" , p2.x , p2.y );
  
  return 0;
}


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(RAD60) - (t.y-s.y)*sin(RAD60) + s.x;
  u.y = (t.x-s.x)*sin(RAD60) + (t.y-s.y)*cos(RAD60) + s.y;

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

