摘要：
吉哥又想出了一个新的完美队形游戏！ 假设有n个人按顺序站在他的面前，他们的身高分别是h[1], h[2] … h[n]，吉哥希望从中挑出一些人，让这些人形成一个新的队形，新的队形若满足以下三点要求，则就是新的完美队形： 1、挑出的人保持原队形的相对顺序不变，且必须都是在原队形中连续的；2、左右对称， 阅读全文
摘要：
Andy the smart computer science student was attending an algorithms class when the professor asked the students a simple question, “Can you propose an 阅读全文
摘要：
There are n men ,every man has an ID(1…n).their ID is unique. Whose ID is i and i-1 are friends, Whose ID is i and i+1 are friends. These n men stand 阅读全文
摘要：
Alice and Bob has just learned how to find average of some numbers. They got really excited anddecided to come up with a game about finding average. T 阅读全文