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DescriptionWe give the following inductive definition of a “regular brackets” sequence:the empty sequence is a regular brackets sequence,ifsis a regul... 阅读全文
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DescriptionMichael喜欢滑雪百这并不奇怪， 因为滑雪的确很刺激。可是为了获得速度，滑的区域必须向下倾斜，而且当你滑到坡底，你不得不再次走上坡或者等待升降机来载你。Michael想知道载一个区域中最长底滑坡。区域由一个二维数组给出。数组的每个数字代表点的高度。下面是一个例子 1 2 ... 阅读全文
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Hrdv is interested in a string,especially the palindrome string.So he wants some palindrome string.A sequence of characters is a palindrome if it is t... 阅读全文
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DescriptionA palindrome is a symmetrical string, that is, a string read identically from left to right as well as from right to left. You are to write... 阅读全文
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Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1*1 or greater located within the... 阅读全文
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Description The world financial crisis is quite a subject. Some people are more relaxed while others are quite anxious. John is one of them. He is ver 阅读全文
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DescriptionIn a few months the European Currency Union will become a reality. However, to join the club, the Maastricht criteria must be fulfilled, an... 阅读全文
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DescriptionLetxandybe two strings over some finite alphabetA. We would like to transformxintoyallowing only operations given below:Deletion:a letter i... 阅读全文
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Time Limit:1000MSMemory Limit:32768KB64bit IO Format:%I64d & %I64uSubmitStatusDescription一组研究人员正在设计一项实验，以测试猴子的智商。他们将挂香蕉在建筑物的屋顶，同时，提供一些砖块给这些猴子。如果猴子足够聪明... 阅读全文
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A - 最大子段和 Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status A - 最大子段和 Submit Status Description Given a sequence a[1] 阅读全文