kkksc03 @ 2014-11-09 22:45:07
提高：http://www.luogu.org/problem/lists?name=14%E6%8F%90%E9%AB%98
普及：http://www.luogu.org/problem/lists?name=14%E6%99%AE%E5%8F%8A
仅供参考
by GoodLuckCat @ 2023-11-27 17:21:25
qp&&kkk的帖子一楼！