Messages are the same with ACM/UVa Online Judge System

AC: Accept means accept.
WA: Wrong Answer with the line number and current answer.
TLE: Time Limit Exceed.
MLE: Memory Limit Exceed.
OLE: Memory Limit Exceed.
RE: Runtime Error e.q.: Out of range in Array.
RF: Restricted Function.
CE: Compile Error.The Compiler
SE: System Error, unknown Errors.

User's guide

[Announcement] 系統關機
[Announcement] 錯誤訊息開放
[Announcement] 說明
[Announcement] Added 2005 and 2006 NPSC competition problems and judged with the official test data.
[Announcement] The difficulity was voted by users who had solved the problem.
[Announcement] The method of counting points.