#include<stdio.h>
#include<math.h>
????
int koch(double x1,double y1,double x2,double y2,int n){
??
????if(n==0){
????????printf("%f %f\n",x2,y2);
????????return 0;
????}
??
????double Ax,Ay,Bx,By,Cx,Cy;
????Ax=(x2-x1)/3+x1;
????Ay=(y2-y1)/3+y1;
????Bx=(x2-x1)*2/3+x1;
????By=(y2-y1)*2/3+y1;
????Cx=(cos(M_PI/3)*(Bx-Ax)-sin(M_PI/3)*(By-Ay))+Ax;
????Cy=(sin(M_PI/3)*(Bx-Ax)+cos(M_PI/3)*(By-Ay))+Ay;
????koch(x1, y1, Ax, Ay, n-1);
????koch(Ax, Ay, Cx, Cy, n-1);
????koch(Cx, Cy, Bx, By, n-1);
????koch(Bx, By, x2, y2, n-1);
????????
}
??
??
int main(){
????int n;
????double x1=0,y1=0,x2=100,y2=0;
????scanf("%d",&n);
????printf("0.00000000 0.00000000\n");
????koch(x1,y1,x2,y2,n);
????return 0;
}