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

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

void kock(int, P, P);

int main(){

  int n;
  P p1 = {0.0, 0.0}, p2 = {100.0, 0.0};

  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, P p1, P p2){

  P s, t, u;

  if(n == 0) return 0;

  s.x = (p1.x * 2 + p2.x) / 3;
  s.y = (p1.y * 2 + p2.y) / 3;
  t.x = (p1.x + p2.x * 2) / 3;
  t.y = (p1.y + p2.y * 2) / 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);

}