答案是 0 吗
by InversionShadow @ 2023-07-08 11:39:42
@[ydq1101](/user/672281) addd
by Unino @ 2023-07-08 11:44:54
第二篇 tj 输出 `-1`
by Unino @ 2023-07-08 11:50:31
@[小粉兔](/user/10703)
by Unino @ 2023-07-08 12:28:13
@[chen_zhe](/user/8457)
by Unino @ 2023-07-08 17:11:50
@[NOI365](/user/706290) hack 的原理是什么?造数据的思路是什么?题解的代码哪里挂了?
by 小粉兔 @ 2023-07-09 03:00:54
@[小粉兔](/user/10703) $1 \to 2 \to 3$ 经过不超过 $k$ 条边,答案是 $0$,第二篇 tj 二分左端点从 $1$ 开始的。
by Unino @ 2023-07-09 07:26:06
第八篇 tj 输出 $1$
by Unino @ 2023-07-09 07:57:49