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

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

void kock(int, point, point);
double pi = M_PI;


int main(){
  int n;
  point p1, p2;
  p1.x = p1.y = p2.y = 0;
  p2.x = 100;

  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){
  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)*cos(pi/3) - (t.y - s.y)*sin(pi/3) + s.x;
  u.y = (t.x - s.x)*sin(pi/3) + (t.y - s.y)*cos(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);
}

