#include<stdio.h>
#define _USE_MATH_DEFINES
#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;
  double th  = M_PI/3;

  s.x = (2.0*p1.x + 1.0*p2.x)/3;
  s.y = (2.0*p1.y + 1.0*p2.y)/3;
  t.x = (1.0*p1.x + 2.0*p2.x)/3;
  t.y = (1.0*p1.y + 2.0*p2.y)/3;
  u.x = (t.x - s.x)*cos(th) - (t.y - s.y)*sin(th) + s.x;
  u.y = (t.x - s.x)*sin(th) + (t.y - s.y)*cos(th) + 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(void){
  point p1,p2;
  int n;

  scanf("%d",&n);

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

  printf("%lf %lf\n", p1.x, p1.y);
  koch(n, p1, p2);
  printf("%lf %lf\n", p2.x, p2.y);

  return 0;
}

