样例输出的是8
by 黑影洞人 @ 2023-06-09 16:24:52
哪道题
by foood @ 2023-06-09 17:48:39
@[foood](/user/1005689) K远点对
by LingZhang @ 2023-06-09 18:05:22
@[黑影洞人](/user/285617) 现在你过不去加强后的数据了:)
by lqyc @ 2023-06-15 14:15:49