说明：  ACM中常用的算法思想与常用算法,是本人自己精心收集的,其中含清华ACM训练时候的笔迹,对ACM的人员是极佳的参考资料
(ACM commonly used algorithm commonly used algorithms and thinking, is my own collection of carefully, with Tsinghua ACM training when the handwriting on the staff ACM is an excellent reference)