qiuxueming_csdn

Mr Wang wants some boys to help him with a project. Because the project is rather complex, the more boys come, the better it will be. Of course there are certain requirements. Mr Wang selected a

C. Socks time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Arseniy is already grown-up and independent. His m

B. Bear and Friendship Condition time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Bear Limak examines a social

 A supermarket has a set Prod of products on sale. It earns a profit px for each product x∈Prod sold by a deadline dx that is measured as an integral number of time units starting from the moment t

严重急性呼吸系统综合症( SARS), 一种原因不明的非典型性肺炎,从2003年3月中旬开始被认为是全球威胁。为了减少传播给别人的机会, 最好的策略是隔离可能的患者。 在Not-Spreading-Your-Sickness大学( NSYSU), 有许多学生团体。同一组的学生经常彼此相通,一个学生可以同时加入几个小组。为了防止非典的传播,NSYSU收集了所有学生团体的成员名单。他们的标

 A tree is a well-known data structure that is either empty (null, void, nothing) or is a set of one or more nodes connected by directed edges between nodes satisfying the following properties.

 Background Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders and that they only interact with bugs of the opposi