老鼠

Problem DescriptionAcmer in HDU-ACM team are ambitious, especially shǎ崽, he can spend time in Internet bar doing problems overnight. So many girls want to meet and Orz him. But Orz him is not that e

Problem DescriptionWar is the reciprical and violent application of force between hostile political entities aimed at bringing about a desired political end-state via armed conflict. War is an inter

DescriptionDo you like playing basketball ? If you are , you may know the NBA Skills Challenge . It is the content of the basketball skills . It include several parts , such as passing , shooting

DescriptionLindsay is a shopaholic. Whenever there is a discount of the kind where you can buy three items and only pay for two, she goes completely mad and feels a need to buy all items in the st

DescriptionThe end of the school year is near and Ms. Manana, the teacher, will soon have to say goodbye to a yet another class. She decided to prepare a goodbye present for her n students and g

DescriptionFor security issues, Marjar University has an access control system for each dormitory building.The system requires the students to use their personal identification cards to open the g

DescriptionThere are N little kids sitting in a circle, each of them are carrying some java beans in their hand. Their teacher want to select M kids who seated in M consecutive seats and collect j

DescriptionXenia the beginner mathematician is a third year student at elementary school. She is now learning the addition operation.The teacher has written down the sum of multiple numbers. Pup