ACM的入门教程，包括ACM的简介，C++ STL泛型编程，还有一些必备的ACM编程知识，最后是50道实战题，包括详细的分析，很值得学习！-ACM introductory tutorial, including the ACM' s Introduction, C++ STL generic programming, ACM and some programming knowledge necessary, and finally the 50 actual questions, inc