This git will only focus on Zju Online Judge, welcome programs that are: 1) It has not been submitted in this git before; 2) or, it is better than current program, in time or space; 3) or, it provides a different view or model to current solution; 4) These codes will be listed in a directory called excellent, and each file will contain the author, time, space in zoj and possible comments. Contact me via zhouweikuan at gmail dot com, if you feel something about this repository. Let's pass zoj together. Thanks in advance! Yours Sincerely, Zhou Weikuan