###烦请您提供实际题目。
by 永忻 @ 2016-03-24 19:52:24
@[Midra](/space/show?uid=9951) 此题为图片题,样例在图片里![](http://cdnv2.luogu.org/upload/pic/811.png)
by 永忻 @ 2016-03-24 19:53:38
好吧眼拙了= =
by Midra @ 2016-03-24 19:57:40