数据结构 1
莫队的重学。普通莫队的排序有很多讲究,以后只写回滚莫队好了,至少复杂度是稳定的。这是莫队的排序关键字:$(\textit{bel}_{ \text{left endpoint }}, \text...
In mathematics you don't understand things, you just get used to them.
In mathematics you don't understand things, you just get used to them.