哇巨佬啊，还会线段树这么高级的东东
by tocek_shiki @ 2018-06-14 21:37:20
@[SOLDIER_76](/space/show?uid=34586) 单调队列了解一下
by Altria_Pendragon_ @ 2018-06-14 21:59:40
正常
by Victorique @ 2018-06-14 21:59:49