@[JiaDu_Yin](/user/1206075) 三个区间有交集，如 $[1,4],[2,5],[3,6]$
by Bingxiu @ 2023-11-24 17:34:08
@[Bingxiu](/user/676498) 对哦，谢谢，那看来这个思路不太好,本来觉得这样时间复杂度小
by JiaDu_Yin @ 2023-11-24 19:45:47