[不开long long的结果](https://www.luogu.com.cn/record/85849393)
by lcy5419 @ 2023-02-03 16:47:53
规律题目 https://ricemoon.cn/algorithm/solution/103/
by Roger_Spencer @ 2023-02-07 16:19:32
@[ljlbj_fengyuwuzu](/user/921114)
谢大佬
by Czero_2023 @ 2023-06-20 18:58:07