没有人吗……QwQ
by lihaochen_harold @ 2020-08-13 18:48:49
建议看一下题解的第一个,在计算距离时可能会爆long long
by Ceritor_Hanio @ 2020-08-14 09:21:58
巧了,我也是
by Richard21477 @ 2020-10-25 17:39:52