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

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

void koch(int n, point p1, point p2){
  point s,t,u;

  if(n==0){
    return;
  }

  //s,t,uの算出
  //----------------------
  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(60*M_PI/180)-(t.y-s.y)*sin(60*M_PI/180)+s.x;
  u.y = (t.x-s.x)*sin(60*M_PI/180)+(t.y-s.y)*cos(60*M_PI/180)+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() {
  int n;
  point p1,p2;

  scanf("%d",&n);
  p1.x = 0.0;
  p1.y = 0.0;
  p2.x = 100.0;
  p2.y = 0.0;

  printf("%lf %lf\n", p1.x, p2.y);
  koch(n,p1,p2);
  printf("%lf %lf\n", p2.x, p2.y);
  return 0;
}

