其实暴力DP可以水过去的……
by iotang @ 2017-10-07 21:40:28
@[IsaacOriTang](/space/show?uid=44176) 蛤？我的$O(n^2)$只有60啊。。。
by panda_2134 @ 2017-10-08 07:26:51
@[panda2134](/space/show?uid=23865) 改变DP顺序//滑稽
by iotang @ 2017-10-09 07:28:58
@[IsaacOriTang](/space/show?uid=44176) 我改成BIT就ac了。。。果然我写的线段树有毒
by panda_2134 @ 2017-10-12 22:40:03