Description 你是一家建公司的建工程,你被派做一空地的建策工作。 是一矩形的空地,你必在上面一子矩形作房的地基,而了增加......(全文)
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Problem BCactusInput: standard inputOutput: standard output A directed graph is a ......(全文)
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Problem A Almost Union-Find I hope you know the beautiful Union-Find structure. In......(全文)
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Euclid Problem The Problem From Euclid it is known that for any posi......(全文)
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