Tizzi的博客

一、内容 相信大家都听说一个“百岛湖”的地方吧，百岛湖的居民生活在不同的小岛中，当他们想去其他的小岛时都要通过划小船来实现。现在政府决定大力发展百岛湖，发展首先要解决的问题当然是交通问题，政府决定实现百岛湖的全畅通！经过考察小组RPRush对百岛湖的情况充分了解后，决定在符合条件的小岛间建上桥，所谓符合条件，就是2个小岛之间的距离不能小于10米，也不能大于1000米。当然，为了节省资金，只要求实...

一、内容Given a connected undirected graph, tell if its minimum spanning tree is unique.Definition 1 (Spanning Tree): Consider a connected, undirected graph G = (V, E). A spanning tree of G is a subgra...

一、内容The Borg is an immensely powerful race of enhanced humanoids from the delta quadrant of the galaxy. The Borg collective is the term used to describe the group consciousness of the Borg civilizati...

一、内容The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has a very poor system of public highways. The Flatopian government is aware of this problem and has already constructed a...

一、内容Advanced Cargo Movement, Ltd. uses trucks of different types. Some trucks are used for vegetable delivery, other for furniture, or for bricks. The company has its own code describing each type of...

一、内容In the planet w-503 of galaxy cgb, there is a kind of intelligent creature named QS. QScommunicate with each other via networks. If two QS want to get connected, they need to buy two network adap...

一、内容There are N villages, which are numbered from 1 to N, and you should build some roads such that every two villages can connect to each other. We say two village A and B are connected, if and only...

一、内容秘密的牛奶运输农夫约翰要把他的牛奶运输到各个销售点。运输过程中，可以先把牛奶运输到一些销售点，再由这些销售点分别运输到其他销售点。运输的总距离越小，运输的成本也就越低。低成本的运输是农夫约翰所希望的。不过，他并不想让他的竞争对手知道他具体的运输方案，所以他希望采用费用第二小的运输方案而不是最小的。现在请你帮忙找到该运输方案。注意：：如果两个方案至少有一条边...

一、内容描述【简化版题意】给定一棵N个节点的树，要求增加若干条边，把这棵树扩充为完全图，并满足图的唯一最小生成树仍然是这棵树。求增加的边的权值总和最小是多少。我们一共有N个OIER打算参加这个泼水节，同时很凑巧的是正好有N个水龙头(至于为什么，我不解释)。N个水龙头之间正好有N-1条小道，并且每个水龙头都可以经过小道到达其他水龙头(这是一棵树，你应该懂的..)。但是OIER门为了迎接中中的...

一、内容The Department of National Defence (DND) wishes to connect several northern outposts by a wireless network. Two different communication technologies are to be used in establishing the network: ev...

一、内容题目描述Farmer John has decided to bring water to his N (1 <= N <= 300) pastures which are conveniently numbered 1..N. He may bring water to a pasture either by building a well in that pasture...