#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);
}