by yyyzrc123 @ 2023-10-08 17:17:17
不能用染色啊，算法错误
by Bant_Metor @ 2023-10-08 17:20:55
好比说
1连2
3连4
那这时1234颜色都是1，那不就连不了边了吗？可是此时树不连通啊
by Bant_Metor @ 2023-10-08 17:22:29
@[Bant_Metor](/user/389729) 谢谢，该问题已解决，使用并查集
by yyyzrc123 @ 2023-10-09 16:43:39
[过了!!!](https://www.luogu.com.cn/record/128416434)
by yyyzrc123 @ 2023-10-09 17:07:20