样例有误

AT_arc063_a [ABC047C] 一次元リバーシ

是应该输出0 @cheng_zhe @[yjjr](/space/show?uid=5088)
by ljxljxljx @ 2018-07-23 22:24:14


@[chen_zhe](/space/show?uid=8457)
by ljxljxljx @ 2018-07-23 22:24:46


@[BB2655](/space/show?uid=78860) fixed
by yjjr @ 2018-07-25 10:19:19


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