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qklbishe 农场主有一群牛,每头牛都有一个独特的名字,名字由英文字母组成。农场主注意到,有一些牛的名字具有特殊的规律,这些名字可以由一个子串重复若干次得到。现在,农场主想要找出一个最长的子串,这个子串既可以生成牛A的名字str1,也可以生成牛B的名字str2。你需要帮助农场主找出这个子串。 区块链毕设网qklbishe.com为您提供问题的解答 农场主有一群牛,每头牛都有一...
qklbishe 段好社会秩序的维护,离不开那些()着社会公共秩序的维护者,比如基层警察和社会保障工作者们,他们的()付出值得我们尊重。填入括号部分最恰当的一项是()。 区块链毕设网qklbishe.com为您提供问题的解答 段好社会秩序的维护,离不开那...
qklbishe Сity N. has a huge problem with roads, food and IT-infrastructure. In total the city has n junctions, some pairs of them are connected by bidirectional roads. The road network consists of n - 1 roads, you can get from any junction to any other one by these roads. Yes, you’re right — the road network forms an undirected tree. Recently, the Mayor came up with a way that eliminates the problems with the food and the IT-infrastructure at the same time! He decided to put at the city junctions restaurants of two well-known cafe networks for IT professionals: "iMac D0naldz" and "Burger Bing". Since the network owners are not friends, it is strictly prohibited to place two restaurants of different networks on neighboring junctions. There are other requirements. Here’s the full list: each junction must have at most one restaurant; each restaurant belongs either to "iMac D0naldz", or to "Burger Bing"; each network should build at least one restaurant; there is no pair of junctions that are connected by a road and contains restaurants of different networks. The Mayor is going to take a large tax from each restaurant, so he is interested in making the total number of the restaurants as large as possible. Help the Mayor to analyze the situation. Find all such pairs of (a, b) that a restaurants can belong to "iMac D0naldz", b restaurants can belong to "Burger Bing", and the sum of a + b is as large as possible. Recently, the Mayor came up with a way tha...