Equivalent Prefixes【2019牛客暑期多校訓練營(第一場)A】

  連接:https://ac.nowcoder.com/acm/contest/881/A 來源:牛客網  ios 題目描述 Two arrays u and v each with m distinct elements are called equivalent if and only if RMQ(u,l,r)=RMQ(v,l,r)RMQ(u,l,r)=RMQ(v,l,r) for all
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