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IPPP (Institute of Penniless Peasent-Programmer) Fellow

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2010年8月4日

摘要:Time limit: 3.000 secondsBackgroundCryptography deals with methods of secret communication that transform a message (the plaintext) into a disguised form (the ciphertext) so that no one seeing the cip... 阅读全文
posted @ 2010-08-04 17:42 Devymex 阅读 (1209) 评论 (0) 编辑

摘要:Time limit: 3.000 seconds限时:3.000秒Background背景In the movie "Die Hard 3", Bruce Willis and Samuel L. Jackson were confronted with the following puzzle. They were given a 3-gallon jug and a 5-gallon jug... 阅读全文
posted @ 2010-08-04 16:08 Devymex 阅读 (1169) 评论 (0) 编辑

摘要:Time limit: 3.000 seconds限时:3.000秒Background背景How can anagrams result from sequences of stack operations? There are two sequences of stack operators which can convert "TROT" to "TORT":怎样才能通过一系列的堆栈操作,将... 阅读全文
posted @ 2010-08-04 16:02 Devymex 阅读 (2002) 评论 (0) 编辑

摘要:Time limit: 3.000 seconds限时:3.000秒Background背景Some concepts in Mathematics and Computer Science are simple in one or two dimensions but become more complex when extended to arbitrary dimensions. Consi... 阅读全文
posted @ 2010-08-04 14:22 Devymex 阅读 (1647) 评论 (0) 编辑

摘要:Time limit: 3.000 seconds限时:3.000秒Background背景Bin packing, or the placement of objects of certain weights into different bins subject to certain constraints, is an historically interesting problem. So... 阅读全文
posted @ 2010-08-04 14:05 Devymex 阅读 (1983) 评论 (0) 编辑

摘要:Time limit: 3.000 second限时:3.000秒Background背景Many areas of Computer Science use simple, abstract domains for both analytical and empirical studies. For example, an early AI study of planning and robot... 阅读全文
posted @ 2010-08-04 14:01 Devymex 阅读 (8279) 评论 (0) 编辑

摘要:Time limit: 3.000 seconds限时:3.000秒Background背景Problems in Computer Science are often classified as belonging to a certain class of problems (e.g., NP, Unsolvable, Recursive). In this problem you will be analyzing a property of an algorithm whose classification is not known for all possible inputs.计算 阅读全文
posted @ 2010-08-04 13:46 Devymex 阅读 (6040) 评论 (5) 编辑