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codefes2016 qualb E Lexicographical disorder
October 11, 2016
こういう系はちょっと慣れない
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AIMTech Round3 D1A Letters Cyclic Shift
August 28, 2016
綺麗な問題
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SRM630D1Med SuffixArrayDiv1
July 28, 2016
似たようなの解いたことある
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