Submission judging consists of the following steps:

1. Submission compiling;
2. Input data preparation, submission running;
3. Output checking;
4. Manual verification.

Step 1 is performed once for each submission, steps 2 and 3 — once for each test, step 4 is performed only on some problems specifically designed for manual verification.

Submission judging can result in following verdicts:

Abbreviation	Name	Description	Possibly caused by
OK	OK / Solution accepted	Test passed / solution accepted.	-
RJ	Rejected	Solution is rejected.	Displayed when browsing other contestants' submissions during the contest.
CE	Compilation error	Compilation error.	Syntax error, wrong file submitted, wrong programming language chosen.
LI	Linter error	Source code check failed.	Usage of library function forbidden by problem statement, source formatting violates specification, wrong programming language chosen.
RE	Run-time error	Error during execution, submission finished with non-zero exit code.	Wrong input file name, out of bounds array access, halt/exit/return statement with non-zero argument.
PE	Presentation error	Checker was unable to parse output file.	Wrong output file name, wrong output file format, output to console instead of file, output file not closed.
WA	Wrong answer	Output is incorrect.	Error in algorithm.
TL	Time limit exceeded	Time for a test is limit exceeded.	Inefficient algorithm, infinite loop, slow programming language.
IL	Idleness limit exceeded	Idleness limit for a test is exceeded.	Long waiting without loading the CPU, input from keyboard.
ML	Memory limit exceeded	Memory limit for a test is exceeded.	Inefficient algorithm, using programming language with wasteful memory allocator.
WL	Write limit exceeded	Write limit for a test is exceeded.	Infinite loop during output, multiple rewrites of output file.
SV	Security violation	Contest rules violation.	Performing actions forbidden by rules, such as network access. Plagiarism.
IS	Ignored submit	Submission is ignored.	Submission failed for no fault of the contestant.
AW	Awaiting manual verification	Awaiting for verification by human judge.	Submission has passed automated checks, awaiting manual inspection.
MR	Rejected by manual verification	Rejected by human judge.	During the manual inspection submission was judged unacceptable. For example, bad coding style.
BA	Banned	Participant is no longer permitted to submit this problem.	Illegal access to hint or source code for solution.