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题目: We give the following inductive definition of a “regular brackets” sequence: the empty sequence is a regular brackets sequence, if s is a regular 阅读全文
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题目: The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has no public highways. So the traffic is difficult in Flatopia. The Flat 阅读全文
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题目: Severe acute respiratory syndrome (SARS), an atypical pneumonia of unknown aetiology, was recognized as a global threat in mid-March 2003. To mini 阅读全文
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题目: The SUM problem can be formulated as follows: given four lists A, B, C, D of integer values, compute how many quadruplet (a, b, c, d ) ∈ A x B x C 阅读全文
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题目: Emily the entrepreneur has a cool business idea: packaging and selling snowflakes. She has devised a machine that captures snowflakes as they fall 阅读全文
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gcd(最大公因数)和lcm(最小公倍数) 辗转相除法求a和b的最大公因数和最小公倍数: 最小公倍数=a*b/最大公约数; 求最大公因数: 求最小公倍数: 题目: There is a hill with n holes around. The holes are signed from 0 to 阅读全文
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题目: Background The knight is getting bored of seeing the same black and white squares again and again and has decided to make a journey around the wor 阅读全文
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题目: A university network is composed of N computers. System administrators gathered information on the traffic between nodes, and carefully divided th 阅读全文
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题目: The GeoSurvComp geologic survey company is responsible for detecting underground oil deposits. GeoSurvCompworkswithonelargerectangularregionofland 阅读全文
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题目: You are trapped in a 3D dungeon and need to find the quickest way out! The dungeon is composed of unit cubes which may or may not be filled with r 阅读全文
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题目: Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N ≤ 100,000) on a 阅读全文
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题目: A robot has been programmed to follow the instructions in its path. Instructions for the next direction the robot is to move are laid down in a gr 阅读全文
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题目: Pass a year learning in Hangzhou, yifenfei arrival hometown Ningbo at finally. Leave Ningbo one year, yifenfei have many people to meet. Especiall 阅读全文