吧 l = -1 改成l = 0就行了
by 130126lyp @ 2023-08-12 12:25:49
[测试点信息](https://www.luogu.com.cn/record/120445768)
by 130126lyp @ 2023-08-12 12:26:51
@[FXTfanxueting2](/user/702821)
by 130126lyp @ 2023-08-12 12:27:18
附加点答案是0，不能直接除
by Liu_Yicheng @ 2023-08-29 11:32:12
写个特判即可
by Liu_Yicheng @ 2023-08-29 11:33:18