不要`cin`和`cout`，读入输出太慢了
by Siyuan @ 2018-07-12 21:15:56
@[Ofnoname](/space/show?uid=73489)
1.快读快输
2.别用log2()
by かなで @ 2018-07-12 21:17:13
@[siyuan](/space/show?uid=49725) @[かなで](/space/show?uid=100018) 谢谢大佬们，吃一堑长一智，AC了。
by AlgoEmperor @ 2018-07-12 21:20:51
C++的扩展内容效率都这么低的吗
by AlgoEmperor @ 2018-07-12 21:21:18
lg还将就用
by Juanzhang @ 2018-07-13 16:03:44
手写快读
自己动手丰衣足时
by CreeperLordVader @ 2018-07-30 20:13:34