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

#define PI 3.141592

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

void kock(int,Point,Point);

int main(){
  
  Point p1={0.0 ,0.0},p2={100.0 ,0.0};
  int n;
  
  //in
  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;
  
  double rad = (60*PI)/180.0;
  
  if(n==0) return ;
  
  //calc
  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(rad)-(t.y-s.y)*sin(rad)+s.x;
  u.y = (t.x-s.x)*sin(rad)+(t.y-s.y)*cos(rad)+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);

}

//memo:再起されるごとに関数のメモリが確保されるので、再起前の関数のデータは消えない