我记得要用分块吧？
by ikun_god @ 2024-01-06 19:23:06
@[卷王](/user/494699) o(╥﹏╥)o
by 12345xa @ 2024-01-06 19:30:30
主席树貌似被hack了，只能用分块
by LYBT @ 2024-01-06 20:02:58
线段树不行的，，卡线段树
by Molie @ 2024-02-18 15:41:58