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http://acm.hdu.edu.cn/showproblem.php?pid=1588 Problem Description Without expecting, Angel replied quickly.She says: "I'v heard that you'r a very cle 阅读全文
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http://acm.sdut.edu.cn/sdutoj/showproblem.php?pid=2498&cid=1304 题目描述 一个无环的有向图称为无环图(Directed Acyclic Graph),简称DAG图。 AOE(Activity On Edge)网:顾名思义,用边表示活动的 阅读全文
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http://acm.hdu.edu.cn/showproblem.php?pid=1757 Problem Description Lele now is thinking about a simple function f(x).If x < 10 f(x) = x.If x >= 10 f(x 阅读全文