qndmx
by 森岛帆高 @ 2019-10-10 22:42:24
@[LJB00131](/space/show?uid=54544) 这篇题解貌似只开了1倍，写的不好吧
https://www.luogu.org/blog/user49097/solution-p1659
by RinkaSnow @ 2019-10-10 22:55:32
~~qndmx~~
by mraymes @ 2019-10-11 00:07:35