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B. RebrandingThe name of one small but proud corporation consists ofnlowercase English letters. The Corporation has decided to try rebranding— an acti... 阅读全文
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C. Median SmoothingA schoolboy named Vasya loves reading books on programming and mathematics. He has recently read an encyclopedia article that descr... 阅读全文
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Stealing Harry Potter's PreciousProblem Description Harry Potter has some precious. For example, his invisible robe, his wand and his owl. When Hogwa... 阅读全文