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

typedef struct endPoint{
  double x;
  double y;
}endpoint;

void kock(int, endpoint, endpoint);

int main(){

  int n;
  endpoint p1, p2;

  p1.x = 0.0;
  p1.y = 0.0;
  p2.x = 100.0;
  p2.y = 0.0;

  scanf("%d",&n);

  printf("%.8f %.8f\n",p1.x,p1.y);

  kock(n,p1,p2);

  printf("%.8f %.8f\n",p2.x,p2.y);

  return 0;

}

void kock(int n, endpoint p1, endpoint p2){

  endpoint s,t,u;

  if( n==0 ) 
    return ;
  
  s.x = (2 * p1.x + 1 * p2.x) / 3.0;
  s.y = (2 * p1.y + 1 * p2.y) / 3.0;
  t.x = (1 * p1.x + 2 * p2.x) / 3.0;
  t.y = (1 * p1.y + 2 * p2.y) / 3.0;
  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("%.8f %.8f\n", s.x, s.y);

  kock(n-1, s, u);

  printf("%.8f %.8f\n", u.x, u.y);

  kock(n-1, u, t);

  printf("%.8f %.8f\n", t.x, t.y);

  kock(n-1, t, p2);

}