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

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

void kock(int,Point,Point);

int main(){

  int n;
  Point p1;
  Point p2;

  p1.x = 0;
  p1.y = 0;
  p2.x = 100;
  p2.y = 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,Point p1,Point p2){

  Point s,t,u;

  if(n == 0){
    return;
  }

  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;

  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);
}
    