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

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

void kock(int n,Roll p1,Roll p2){
  Roll 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)/2-(t.y-s.y)/2*sqrt(3)+s.x;
  u.y = (t.x-s.x)/2*sqrt(3)+(t.y-s.y)/2+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);
}

int main(){
  Roll p1={0.0,0.0},p2={100.0,0.0};
  int n;

  scanf("%d\n",&n);
  printf("%f %f\n",p1.x,p1.y);
  kock(n,p1,p2);
  printf("%f %f\n",p2.x,p2.y);
  
  return 0;
}