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Deletion 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5639 Description There is an undirected graph G with n vertices and m edges. Every time, you 阅读全文
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Toposort 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5638 Description There is a directed acyclic graph with n vertices and m edges. You are allow 阅读全文
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Transform 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5637 Description A list of n integers are given. For an integer x you can do the following o 阅读全文
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Shortest Path 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5636 Description There is a path graph G=(V,E) with n vertices. Vertices are numbered fr 阅读全文
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1640 天气晴朗的魔法 题目连接： http://www.51nod.com/onlineJudge/questionCode.html !problemId=1640 Description 51nod魔法学校近日开展了主题为“天气晴朗”的魔法交流活动。 N名魔法师按阵法站好，之后选取N 1条魔 阅读全文