原题目 A reversible prime in any number system is a prime whose "reverse" i...

原题目 Suppose a bank has N windows open for service. There is a yellow lin...

原题目 It is vitally important to have all the cities connected by highways...

原题目 To evaluate the performance of our first year CS majored students, w...

原题目 With the 2010 FIFA World Cup running, football fans the world over w...

原题目 Given a pair of positive integers, for example, 6 and 110, can this ...

原题目 This time, you are supposed to find A×B where A and B are two polyno...

原题目 The highest building in our city has only one elevator. A request li...

原题目 Given a sequence of K integers. A coutinuous subsequence is defined ...