class Mandel {
  static double xmin = -2;
  static double xmax = 1;
  static double ymin = -1;
  static double ymax = 1;
  static int xstep, ystep, iters;
  
  static Boolean escapes(double cr, double ci, int it) {
    double zr = 0;
    double zi = 0;
    double zrtmp;
    int i;
  
    for(i=0; i<it; i++) {
      // z <- z^2 + c
      zrtmp = zr*zr - zi*zi + cr;
      zi = 2*zr*zi + ci;
      zr = zrtmp;
      if (zr*zr + zi*zi > 4) {
        return true;
      }
    }
    return false;
}

  public static void main(String[] args) {
    int xc, yc;
    double x, y;
    xstep = Integer.parseInt(args[0]);
    ystep = Integer.parseInt(args[1]);
    iters = Integer.parseInt(args[2]);
    
    for(yc=0; yc<ystep; yc++) {
      y = yc*(ymax-ymin)/ystep + ymin;
      for(xc=0; xc<xstep; xc++) {
        x = xc*(xmax-xmin)/xstep + xmin;
        if (escapes(x, y, iters)) {
          System.out.print(' ');
        } else {
          System.out.print('X');
        }
      }
      System.out.print('\n');

    }
  }
}