@ WHYLJ(https://www.luogu.org/space/show?uid=41044)
要的是最大情况,不一定可以杜绝所有的交头接耳
by 星灵王 @ 2017-11-27 13:24:28
@WHYLJ(https://www.luogu.org/space/show?uid=41044)
by 星灵王 @ 2017-11-27 13:24:46