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

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

void koch(int n, point p1, point p2){
  if(n == 0) return;

  point s, t, u;
  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)*0.5 - (t.y - s.y)*(sqrt(3.0)/2.0) + s.x;
  u.y = (t.x - s.x)*(sqrt(3.0)/2.0) + (t.y - s.y)*0.5 + s.y;


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

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