Each submitted source program must be written in C++/PYTHON/ JAVA/GO/C/PASCAL.
A contestant is a student who:
was enrolled in a school at a level not higher than secondary education in Hong Kong.
The contest is in a similar form to the international olympiad informatics (IOI) contest.
There are six tasks in the daily competition. Each task has multiple subtasks. The contestants need to pass all test cases of the subtask to obtain the corresponding marks.
There is no limit to the number of submissions for each task and no penalty for multiple submissions. Only the last submission of each task counts towards the grade.
For every submission, the grading system reports the score for each subtask as well as the feedback.
If a subtask is not fully solved, the grading system gives the feedback only for the first test case among the lowest scored test cases in the subtask. The feedback includes the test case number and one of the following reasons:
Time Limit Exceeded
Memory Limit Exceeded
Output Limit Exceeded
During the contest, the contestants can access the standings and see the real-time ranking.