摘要：Problem Description In China, foreign brand commodities are often much more expensive than abroad. The main reason is that we Chinese people tend to t 阅读全文

摘要：Description You are assigned to design network connections between certain points in a wide area. You are given a set of points in the area, and a set 阅读全文

摘要：Description 城市C是一个非常繁忙的大都市，城市中的道路十分的拥挤，于是市长决定对其中的道路进行改造。城市C的道路是这样分布的：城市中有n个交叉路口，有些交叉路口之间有道路相连，两个交叉路口之间最多有一条道路相连接。这些道路是双向的，且把所有的交叉路口直接或间接的连接起来了。每条道路都有一 阅读全文