@[Star_gazer](/space/show?uid=83153) 大佬好厉害！我都不会做哇！
by 淇淇 @ 2018-10-29 16:42:03
@[Star_gazer](/space/show?uid=83153) %%%
by Wisbtsml @ 2018-10-29 17:00:43
@[Star_gazer](/space/show?uid=83153) 大佬ak noip
by Wisbtsml @ 2018-10-29 17:00:59
@[Star_gazer](/space/show?uid=83153)
https://www.luogu.org/problemnew/solution/P4555
by Wisbtsml @ 2018-10-29 17:04:02