@[aa1939617614](/user/1049207) a 数组定义改成 `int a[l+1];`,因为 0~l 有 l+1 个元素。
by Luzhuoyuan @ 2023-11-29 08:13:15
@[Luzhuoyuan](/user/388940) ok谢谢大佬
by aa1939617614 @ 2023-12-04 00:34:45