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qklbishe 张明、王军、李刚、赵亮四个遇到一起商量是否去听音乐会。张明说,王军去听音乐会我就去听;王军说,李刚去听音乐会,我就不去听;李刚说,我不去听;赵亮说,只要王军和张明有一个人去听,我肯定就去听。已知,张明没去听音乐会。以下哪项是正确的() 区块链毕设网qklbishe.com为您提供问题的解答 张明、王军、李刚、赵亮四个遇...
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...