@[StudyingFather](/user/22030)
by Auferstanden @ 2023-09-23 08:49:15
卡斯蒂利亚
by shengheng @ 2023-09-23 09:23:40
@[Castilian](/user/894526)
by shengheng @ 2023-09-23 09:24:38
说错了，是 $1\le a_i<n$
by Auferstanden @ 2023-09-24 14:57:41
@[minstdfx](/user/100250)
by Auferstanden @ 2023-09-24 14:58:06
已修改。
by minstdfx @ 2023-09-24 15:47:35