这题题意是什么?

P1032 [NOIP2002 提高组] 字串变换

@[shen魏无羡](/space/show?uid=199475) 你的头真的好大: $\Huge\text{O}\tiny\text{rz}$
by chenxia25 @ 2019-08-22 20:08:42


@[Chenxiao_Yan](/space/show?uid=138400) 斩之 # O/rz
by Niao_niao @ 2019-08-22 20:15:03


@[shen魏无羡](/space/show?uid=199475) # $\oplus$/rz
by chenxia25 @ 2019-08-22 20:16:59


~~KO~~
by Niao_niao @ 2019-08-22 20:18:54


~~wokao~~
by Niao_niao @ 2019-08-22 20:19:10


# $\otimes$/rz
by chenxia25 @ 2019-08-22 20:20:27


@[Chenxiao_Yan](/space/show?uid=138400) # ~~orz~~KO
by Niao_niao @ 2019-08-22 20:22:15


###### ~~⊗rz~~
by Niao_niao @ 2019-08-22 20:22:59


通过下面那些变化规则,把a变为b啊
by 北冥有只蒟蒻 @ 2019-08-22 20:23:28


@[shen魏无羡](/space/show?uid=199475) 广搜
by 北冥有只蒟蒻 @ 2019-08-22 20:24:08


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