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题目连接http://acm.hdu.edu.cn/showproblem.php?pid=2425Hiking TripDescriptionHiking in the mountains is seldom an easy task for most people, as it is extre... 阅读全文
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题目连接http://acm.hdu.edu.cn/showproblem.php?pid=1973Prime PathDescriptionThe ministers of the cabinet were quite upset by the message from the Chief of ... 阅读全文
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题目连接http://acm.hdu.edu.cn/showproblem.php?pid=5146SequenceDescriptionToday we have a number sequence A includes n elements.Nero thinks a number sequen... 阅读全文
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某省调查城镇交通状况,得到现有城镇道路统计表,表中列出了每条道路直接连通的城镇。省政府“畅通工程”的目标是使全省任何两个城镇间都可以实现交通(但不一定有直接的道路相连,只要互相间接通过道路可达即可)。问最少还需要建设多少条道路?
Input
测试输入包含若干测试用例。每个测试用例的第1行给出两个正整数,分别是城镇数目N ( 1000 )和道路数目M;随后的M行对应M条道路,每行给出一对正整数,分别是该条道路直接连通的两个城镇的编号。为简单起见,城镇从1到N编号。
注意:两个城市之间可以有多条道路相通,也就是说 阅读全文
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摘要:
题目连接http://acm.hdu.edu.cn/showproblem.php?pid=1213How Many TablesDescriptionToday is Ignatius' birthday. He invites a lot of friends. Now it's dinner ... 阅读全文