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一、DescriptionMost positive integers may be written as a sum of a sequence of at least two consecutive positive integers. For instance,6 = 1 + 2 + 39 =... 阅读全文
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一、DescriptionThe digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a single digit then that ... 阅读全文
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一、DescriptionYou have just moved from Waterloo to a big city. The people here speak an incomprehensible dialect of a foreign language. Fortunately, yo... 阅读全文
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一、Description(3302)Given a string s of length n, a subsequence of it, is defined as another strings' = su1su2...sum where 1 ≤u1 z[i][j-1] ?z[i-1][j]:... 阅读全文
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一、DescriptionStockbrokers are known to overreact to rumours. You have been contracted to develop a method of spreading disinformation amongst the stoc... 阅读全文
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一、DescriptionStandard web browsers contain features to move backward and forward among the pages recently visited. One way to implement these features... 阅读全文
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一、DescriptionStandard web browsers contain features to move backward and forward among the pages recently visited. One way to implement these features... 阅读全文
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一、DescriptionEvery time it rains on Farmer John's fields, a pond forms over Bessie's favorite clover patch. This means that the clover is covered by w... 阅读全文
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一、DescriptionA subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = another sequen... 阅读全文
摘要:
一、DescriptionA subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = another sequen... 阅读全文