B 同时属于左右两个点双。
by Alex_Wei @ 2022-06-24 19:35:18
@[Alex_Wei](/user/123294) 能缩点吗
by xie_lzh @ 2022-06-24 19:36:45
by Alex_Wei @ 2022-06-24 19:36:54
@[xie_lzh](/user/256970) 缩点就是圆方树啊，但是并没有减少点的个数。
by Alex_Wei @ 2022-06-24 19:37:32
@[Alex_Wei](/user/123294) 谢谢
by xie_lzh @ 2022-06-24 19:38:25
圆方树还没学（
by xie_lzh @ 2022-06-24 19:38:50
1. B 同时属于左右两个点双
2. 缩点是将每个强连通分量缩为一个点，与点双无关
by jltxsfl @ 2022-06-24 19:42:36
@[xie_lzh](/user/256970) https://www.cnblogs.com/alex-wei/p/high_level_graph_theory.html /doge
by Alex_Wei @ 2022-06-24 19:42:56
@[Alex_Wei](/user/123294) 谢谢
by xie_lzh @ 2022-06-24 20:01:54
@[jltxsfl](/user/352743) 啥阿，强连通分量只有有向图才有，楼主问的是点双的缩点。
by SalomeJLQ @ 2022-06-24 20:34:45