样例一是怎么回事、、

P2258 [NOIP2014 普及组] 子矩阵

失误。已经更正。感谢反馈@[url=/space/show?uid=]Huang[/url]
by kkksc03 @ 2014-12-16 23:42:40


kkk@错人了 @[Huangc](/space/show?uid=160) @asdfgjsf\_asfaklsdfh
by damage @ 2017-09-28 21:28:52


@asdfgjsf\_asfaklsthsdfh
by damage @ 2017-09-28 21:29:15


@[kkksc](/user/185455)
by jijidawang @ 2019-12-21 17:24:32


@[cxk666](/user/233320)
by jijidawang @ 2019-12-21 17:25:01


@[iostream](/user/13052)
by jijidawang @ 2019-12-21 17:25:28


@[suyuqi7](/user/275078)
by jijidawang @ 2019-12-21 17:26:08


@[luogu](/user/-1)
by jijidawang @ 2019-12-21 17:26:51


@[洛谷](/user/3)
by jijidawang @ 2019-12-21 17:27:08


@[jijidawang](/user/227514)
by jijidawang @ 2019-12-21 17:28:42


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