投稿 https://blog.markjuruo.ooo/2018/07/17/%E5%9B%BE%E8%AE%BA%EF%BC%9A%E4%BB%8E%E4%B8%83%E6%A1%A5%E9%97%AE%E9%A2%98%E5%88%B0%E6%AC%A7%E6%8B%89%E8%B7%AF/

洛谷博客上：https://www.luogu.org/blog/lzhbigbird/zong-qi-qiao-wen-ti-dao-ou-la-lu