Luogu P2824 [HEOI2016/TJOI2016] 排序

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Luogu P1083 [NOIP 2012] 借教室

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Luogu P1084 [NOIP2012] 疫情控制

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Luogu P5021 [NOIP 2018] 赛道修建

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Luogu P2680 [NOIP2015] 运输计划

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hzoi-CSP-56

都是好题

hzoi-CSP-12

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