by BlueArc @ 2018-01-05 23:50:02
呵呵
by iodwad @ 2018-01-06 00:12:46
10^6不是水题是什么
by star_magic_young @ 2018-01-06 09:10:21
要难题可以做[ZJOI2010]数字计数
by newbie314159 @ 2018-01-06 20:19:40
(所以j有什么用处)
by StarLbright40 @ 2019-01-16 11:36:52