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K-wolf Number Problem Description Alice thinks an integer x is a K-wolf number, if every K adjacent digits in decimal representation of x is pairwised 阅读全文
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Two Problem Description Alice gets two sequences A and B. A easy problem comes. How many pair of sequence A' and sequence B' are same. For example, {1 阅读全文
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Lucky Problem Description WLD is always very lucky.His secret is a lucky number K.k is a fixed odd number. Now he meets a stranger with N numbers:a1,a 阅读全文
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NPY and girls Problem Description NPY's girlfriend blew him out!His honey doesn't love him any more!However, he has so many girlfriend candidates.Beca 阅读全文
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Object Clustering Description We have N (N ≤ 10000) objects, and wish to classify them into several groups by judgement of their resemblance. To simpl 阅读全文
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F - Cycling Roads F - Cycling Roads Description When Vova was in Shenzhen, he rented a bike and spent most of the time cycling around the city. Vova w 阅读全文
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Boatherds Description Boatherds Inc. is a sailing company operating in the country of Trabantustan and offering boat trips on Trabantian rivers. All t 阅读全文
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Distance Statistics Description Frustrated at the number of distance queries required to find a reasonable route for his cow marathon, FJ decides to a 阅读全文