您把您dfs中的 `int y=E[x].to;` 改成 `int y=E[i].to;` 就可以过了
by Aaa_liang @ 2024-02-19 16:01:30
@[HeYilin](/user/728459)
by Aaa_liang @ 2024-02-19 16:02:20
@[Aaa_liang](/user/556545) 感谢大佬 orz
by HeYilin @ 2024-02-19 16:03:03