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

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

void kock(int, pos, pos);

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

  p1.x = 0;
  p1.y = 0;

  p2.x = 100;
  p2.y = 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, pos p1, pos p2){

  pos 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("%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);

}