##。。。。你题意没理解,是任选两堆,不是挨着的两堆(真要挨着就成区间DP了) (逃 @[yuanbopang](/space/show?uid=19468) by _19992146 @ 2017-11-27 00:21:49
谢谢大佬 by yuanbopang @ 2017-12-03 15:10:49