的确没用。
by Hatsunatsu @ 2023-12-09 16:23:48
或许是告诉你$a_i$的上限
by ikun_god @ 2023-12-11 18:50:44
原来如此
by zhuowei @ 2023-12-13 13:41:41
$n$ 的确没用。为了告诉你数据范围，所以用一个 $n$。
by bcbgszyzh @ 2023-12-16 12:00:16
@[zhuowei](/user/1085720)
by bcbgszyzh @ 2023-12-16 12:00:32
@[bcbgszyzh](/user/726902) 知道了
by zhuowei @ 2023-12-19 15:44:16