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

typedef struct{
  double x,y;
} P;

void p(int,P,P);
int main(){
  P p1,p2;
  int n;
  scanf("%d",&n);
  p1.x=0;
  p1.y=0;
  p2.x=100;
  p2.y=0;
  printf("%.8f %.8f\n",p1.x,p1.y);
  p(n,p1,p2);
  printf("%.8f %.8f\n",p2.x,p2.y);
  return 0;
}

void p(int n,P p1,P p2){
  P a,b,c;
  double k=60.0*(acos(-1)/180.0);
  if(n==0){
    return;
  }
  a.x=(2.0*p1.x+p2.x)/3.0;
  a.y=(2.0*p1.y+p2.y)/3.0;
  b.x=(p1.x+2.0*p2.x)/3.0;
  b.y=(p1.y+2.0*p2.y)/3.0;
  c.x=(b.x-a.x)*cos(k)-(b.y-a.y)*sin(k)+a.x;
  c.y=(b.x-a.x)*sin(k)+(b.y-a.y)*cos(k)+a.y;
  p(n-1,p1,a);
  printf("%.8f %.8f\n",a.x,a.y);
  p(n-1,a,c);
  printf("%.8f %.8f\n",c.x,c.y);
  p(n-1,c,b);
  printf("%.8f %.8f\n",b.x,b.y);
  p(n-1,b,p2);
}

