#include<stdio.h>
#include<math.h>
typedef struct Position{
	double x;
	double y;
}position;
void kock(int,position,position);
int main(){
	int n;
	position p1,p2;
	p1.x = 0.0;
	p1.y = 0.0;
	p2.x = 100.0;
	p2.y = 0.0;
	scanf("%d",&n);
	printf("%.8f %.8f\n",p1.x,p1.y);
	kock(n,p1,p2);
	printf("%.8f %.8f\n",p2.x,p2.y);
	return 0;
}
void kock(int n,position p1,position p2){
	position s,t,u;
	if( n==0 ) return ;
	s.x = (p1.x * 2 + p2.x * 1 ) / 3.0;
	s.y = (p1.y * 2 + p2.y * 1 ) / 3.0;
	t.x = (p1.x * 1 + p2.x * 2 ) / 3.0;
	t.y = (p1.y * 1 + p2.y * 2 ) / 3.0;
	u.x = (t.x - s.x ) / 2.0 - ( t.y - s.y ) * sqrt(3) / 2.0 + s.x;
	u.y = (t.x - s.x ) * sqrt(3) / 2.0 + ( t.y - s.y ) / 2.0 + s.y;

	kock(n-1,p1,s);
	printf("%.8f %.8f\n",s.x,s.y);
	kock(n-1,s,u);
	printf("%.8f %.8f\n",u.x,u.y);
	kock(n-1,u,t);
	printf("%.8f %.8f\n",t.x,t.y);
	kock(n-1,t,p2);
}

 

	 