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

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

void kock(int, Node, Node);

int main(){

  int n;
  Node p1, p2;

  scanf("%d", &n);

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

  printf("%.8f %.8f\n", p1.x, p1.y);
  kock(n, p1, p2);
  printf("%.8f %.8f\n", p2.x, p2.y);   


  return 0;
}

void kock(int n, Node p1, Node p2){

  Node s, t, u;
  double a;

  if(n == 0){
    return;
  }

  a = M_PI * 60.0/180.0;
  
  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(a)) - ((t.y - s.y) * sin(a)) + s.x;
  u.y = ((t.x - s.x) * sin(a)) + ((t.y - s.y) * cos(a)) + 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);
}