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Many years ago , in Teddy’s hometown there was a man who was called “Bone Collector”. This man like to collect varies of bones , such as dog’s , cow’s 阅读全文
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The aspiring Roy the Robber has seen a lot of American movies, and knows that the bad guys usually gets caught in the end, often because they become t 阅读全文
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Before ACM can do anything, a budget must be prepared and the necessary financial support obtained. The main income for this action comes from Irrever 阅读全文
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Problem Description 电子科大本部食堂的饭卡有一种很诡异的设计,即在购买之前判断余额。如果购买一个商品之前,卡上的剩余金额大于或等于5元,就一定可以购买成功(即使购买后卡上余额为负),否则无法购买(即使金额足够)。所以大家都希望尽量使卡上的余额最少。某天,食堂中有n种菜出售,每种菜 阅读全文
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A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = < x1, x2, ..., xm > another 阅读全文