`unordered_map` 试试？
by vocaloid @ 2019-01-23 11:35:09
@[Vocaloid](/space/show?uid=52734) +1
但是Unorderedmap好像常数也很大
by Itst @ 2019-01-23 11:35:47
~~开O2~~
by pjykk @ 2019-01-23 11:36:34
废话，map自带一个logn的大常数
by Sai0511 @ 2019-01-23 11:38:32
@[Itst](/space/show?uid=96296) 捕捉一本巨佬！
by flashess @ 2019-01-23 11:44:57
@[Itst](/space/show?uid=96296) 惊现[Itst](/space/show?uid=96296)神仙！！！%%%%STO
by _xcc_ @ 2019-01-23 11:47:18
~~map是logn的啊~~
by _虹_ @ 2019-01-23 11:57:55
@[Vocaloid](/space/show?uid=52734) @[Itst](/space/show?uid=96296) [仍然过不了](https://www.luogu.org/recordnew/show/15622035)QAQ
by zyzzyzzyzzyz @ 2019-01-23 11:58:13
关于SPFA,他死了
by Jayun @ 2019-01-23 12:10:21