道路是单向的qωq
by Juan_feng @ 2018-08-23 09:59:33
@[Juan_feng](/space/show?uid=66965) 对啊 但是我写了好多数据都是对的 有反例吗
by Lacer @ 2018-08-23 10:02:52
@[DDFrocket2](/space/show?uid=59142) ~~这道题不是tarjan板子吗~~
等我想一想啊
by Juan_feng @ 2018-08-23 10:05:51
@[Juan_feng](/space/show?uid=66965) qwq
by Lacer @ 2018-08-23 10:07:17
@[DDFrocket2](/space/show?uid=59142) 我知道了
by Juan_feng @ 2018-08-23 10:07:44
稍等我给你个图
by Juan_feng @ 2018-08-23 10:07:57
像这组数据
6 5
1 2
2 3
3 4
6 5
5 4
by Juan_feng @ 2018-08-23 10:10:49
答案应该为2
by Juan_feng @ 2018-08-23 10:11:12
并查集的话答案为1
by Juan_feng @ 2018-08-23 10:11:27
@[DDFrocket2](/space/show?uid=59142)
by Juan_feng @ 2018-08-23 10:11:32