题意求助

P1330 封锁阳光大学

@[huangguoguo](/user/602282) 你选一号,老曹可以在2到3这条线上刷街。
by newbie_QwQ @ 2022-01-13 11:18:15


@[Quhaoran123](/user/535491) 哦,明白了,谢谢!
by huangguoguo @ 2022-01-13 11:45:48


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