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

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

int n;

void kock(int, XY, XY);

int main(){
  int n;
  XY p1 = {0, 0}, p2 = {100, 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, XY p1, XY p2){
  XY s, t, u;

  if(n != 0){
    
    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(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);
  }
}

