@[小粉兔](/user/10703) @[chen_zhe](/user/8457)
by Wangxun @ 2023-10-22 10:04:34
建议立即修改 #6 #8
by Wangxun @ 2023-10-22 10:05:18
补充：洛谷 #9 #10 有误。
题目要求 $u_i=i,v_i=i+1$。
经过 `assert`，只保证了树是一条链，而不是 $u_i=i,v_i=i+1$。
by xs_siqi @ 2023-10-22 10:08:27
@[小粉兔](/user/10703) @[chen_zhe](/user/8457)
by xs_siqi @ 2023-10-22 10:08:48
@[一扶苏一](/user/65363)
by Wangxun @ 2023-10-22 10:43:52