查询时考虑区间合并
by Nuclear_Pasta @ 2023-11-03 14:05:43
显然find_tot写错了
分成3部分,全在左区间,全在右区间,否则合并返回
by Wonderful__Answer @ 2023-11-03 15:05:15
AC 了 谢谢,已关
by zk_y @ 2023-11-04 12:56:06