@[xiaomifeng304484885](/user/796940) 考虑用 vector,或链式前向星来存图。
然后预处理出每个点到根节点的异或和。
然后怎么随便异或一下即可。
by QWQ_123 @ 2024-03-05 17:54:32
@[QWQ_123](/user/740328) 我是小学生,不会这么多,能简单吗?TAT
by xiaomifeng304484885 @ 2024-03-05 17:59:08
@[xiaomifeng304484885](/user/796940) 我小学的时候也能懂欸。
而且能简单的话这道题的意义是什么(
by QWQ_123 @ 2024-03-05 18:17:02
@[QWQ_123](/user/740328) 能教我预处理吗?
by xiaomifeng304484885 @ 2024-03-07 20:08:54
@[xiaomifeng304484885](/user/796940) 感觉您不如直接看题解
by QWQ_123 @ 2024-03-07 20:14:16
@[QWQ_123](/user/740328) 我要做个正直的人
by xiaomifeng304484885 @ 2024-03-07 20:35:43
@[QWQ_123](/user/740328) 还有什么方法能提供给我使用吗?
by xiaomifeng304484885 @ 2024-03-07 20:36:36
@[xiaomifeng304484885](/user/796940) 看题解就不正直?那题解存在的意义是什么?我又没让你抄代码(
而且我提供方法不就是类似题解吗,这样还不如看题解欸(毕竟您连链式前向星都还没学欸建议学习一下,不要做超出能力范围的题捏
by QWQ_123 @ 2024-03-07 21:14:43
@[QWQ_123](/user/740328) ok
by xiaomifeng304484885 @ 2024-04-23 16:33:06