tlqtj
by Night_sea_64 @ 2023-07-21 15:36:25
显然，您写的正解，而且，黄题本身就都很水。，
by Wf_yjqd @ 2023-07-21 15:43:17
tlqtj
by T_AK_CSP_2023 @ 2023-08-11 17:58:20
前缀和本来就是这题正解，前缀和复杂度查询是 $O(1)$ 的啊
by xiaoyang111 @ 2023-09-07 19:28:16