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

#define M_PI 3.14159265358979 

void koch( int n, int ax, int ay, int bx, int by) {
  int sx, sy, tx, ty, ux, uy;
  double th = M_PI * 60.0 / 180.0; 

  if ( n == 0 ){
    return;
  }
  
  sx = (2.0 * ax + 1.0 * bx) / 3.0;
  sy = (2.0 * ay + 1.0 * by) / 3.0;
  tx = (1.0 * ax + 2.0 * bx) / 3.0;
  ty = (1.0 * ay + 2.0 * by) / 3.0;
  ux = (tx - sx) * cos(th) - (ty - sy) * sin(th) + sx;
  uy = (tx - sx) * sin(th) + (ty - sy) * cos(th) + sy;
  
  koch(n - 1, ax, ay, sx, sy);
  printf("%.8f %.8f\n", sx, sy);
  koch(n - 1, sx, sy, ux, uy);
  printf("%.8f %.8f\n", ux, uy);
  koch(n - 1, ux, uy, tx, ty);
  printf("%.8f %.8f\n", tx, ty);
  koch(n - 1, tx, ty, bx, by);
}

int main(){
  int ax, ay, bx, by;
  int n;
  
  scanf("%d", &n);
  
  ax = 0;
  ay = 0;
  bx = 100;
  by = 0;
  
  printf("%.8f %.8f\n", ax, ay);
  koch(n, ax, ay, bx, by);
  printf("%.8f %.8f\n", bx, by);
  
  return 0;
}