@[CKnight](/space/show?uid=35387) 那你觉得这题难度多少啊
by StudyingFather @ 2018-11-06 16:54:58
大佬不要因为自己强而认为其他题目都水……QAQ
by ArachnidaKing @ 2018-11-06 16:56:37
话说你不会是打表做的吧...
by StudyingFather @ 2018-11-06 16:57:27
@[StudyingFather](/space/show?uid=22030) 最多提高+
by CKnight @ 2018-11-06 16:57:37
@[StudyingFather](/space/show?uid=22030) 矩阵树定理
by CKnight @ 2018-11-06 16:57:48
@[CKnight](/space/show?uid=35387) 差一档而已，这个不要太在意...
by StudyingFather @ 2018-11-06 16:58:15
当然如果差两档就过分了...
by StudyingFather @ 2018-11-06 16:58:41
@[StudyingFather](/space/show?uid=22030) Em...
by CKnight @ 2018-11-06 16:58:42
~~那是因为您太强了~~
by Juanzhang @ 2018-11-06 16:59:34
@[CKnight](/space/show?uid=35387) 有的，矩阵树定理noip根本不可能考
by ztz11 @ 2018-11-06 17:12:18