换树状数组A了，此贴终结
总结：单改区查别用线段树
by cmaths @ 2022-08-12 11:50:42
建议加上树状数组tag
by cmaths @ 2022-08-12 11:52:39
好家伙，谢佬都学到这了
by _ANIG_ @ 2022-08-12 14:11:09
ORZ
by _ANIG_ @ 2022-08-12 14:13:06
@[_ANIG_](/user/555287)
**ORZ**
by cmaths @ 2022-08-12 14:51:17