並前往https://www.hkmathscup.com/wp-content/uploads/2019/01/%E9%A6%99%E6%B8%AF%E6%95%B8%E5%AD%B8%E7%9B%832019%E6%AF%94%E8%B3%BD%E6%A8%A1%E6%93%AC%E8%A9%A6%E9%A1%8CP3.pdf
