您都看不懂我怎么看懂啊？
by 1saunoya @ 2020-05-21 20:59:00
线段树合并不香嘛）
这种题没必要平衡树启发式合并吧（
by UltiMadow @ 2020-05-21 20:59:38
@[Meatherm](/user/108949) 线段树合并不好吗,顺便尛又小又强的 $\color{black}{\sf{M}}\color{red}{\sf{eatherm}}$
by Limit @ 2020-05-21 21:02:38
emmm 确实（
爬了，不管了
by Meatherm @ 2020-05-21 21:02:58
~~我竟然是用pbds水过的QwQ~~
by Lice @ 2020-05-21 21:04:07
~~虽然看不懂，但是Meatherm好可爱啊qwq~~
by Inkyo @ 2020-05-21 21:04:54
为啥红色的是根啊
by Register @ 2020-05-21 21:32:32