摘要：Problem DescriptionAs we know, Rikka is poor at math. Yuta is worrying about this situation, so he gives Rikka some math tasks to practice. There is o 阅读全文

摘要：描述 After scrimping and saving for years, Farmer John has decided to build a new barn. He wants the barn to be highly accessible, and he knows the coor 阅读全文

摘要：Problem Description Deep neural networks (DNN) have shown significant improvements in several application domains including computer vision and speech 阅读全文

摘要：Description Give a tree with n vertices,each edge has a length(positive integer less than 1001). Define dist(u,v)=The min distance between node u and 阅读全文

摘要：Problem DescriptionAn abandoned country has n(n≤100000) villages which are numbered from 1 to n. Since abandoned for a long time, the roads need to be 阅读全文

摘要：Problem DescriptionA coding contest will be held in this university, in a huge playground. The whole playground would be divided into N blocks, and th 阅读全文

摘要：描述 One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow party to be held at farm #X (1 ≤ X ≤ N). A to 阅读全文

摘要：描述 有个脑筋急转弯是这样的：有距离很近的一高一低两座桥，两次洪水之后高桥被淹了两次，低桥却只被淹了一次，为什么？答案是：因为低桥太低了，第一次洪水退去之后水位依然在低桥之上，所以不算“淹了两次”。举例说明：假定高桥和低桥的高度分别是5和2，初始水位为1第一次洪水：水位提高到6（两个桥都被淹），退到 阅读全文

摘要：描述 The city executive board in Lund wants to construct a sightseeing tour by bus in Lund, so that tourists can see every corner of the beautiful city. 阅读全文