code craft of huawei this year 2017, some network flow algorithms are used.
2017年华为软件精英挑战赛CDN选址问题的一种思路，其实大家都差不多，都是网路流来搞路径， 然后用模拟退火或者蚁群算法进行cdn位置的优化，两个问题可以结合起来求解。当然由于今年 有些急促，所以未能很理想的解决。
This is 2017 HUAWEI CodeCraft CDN location problem, an initial idea, in fact, we are almost the same, using network flow to get the path, Then the CDN position is optimized by simulated annealing or ant colony algorithm, and the two problems can be solved together.