Submissions and feedback

Every time you submit an answer in SimuLab, the result is recorded in the Submissions tab. This guide explains how to read that information to understand what you did right and what you can improve.

Possible verdicts

After submitting your answer, the system evaluates it and assigns one of these verdicts:

• Accepted — your answer is correct.
• Wrong Answer — your answer does not match the expected one.
• Partial — part of your answer is correct. This appears mainly in free text and step-by-step problems.

Next to the verdict you will see the Score (as a percentage) when applicable.

The written feedback

Below the verdict appears the feedback: a text generated by the AI that explains why your answer is correct, incorrect, or partial, and which concepts to review if you made a mistake.

In numeric problems with test cases, the feedback also shows the detail per case: which ones passed and which did not. Cases marked as Hidden case are additional cases that were not visible before submitting.

If an attempt has no feedback, you will see the message No feedback recorded.

How to use your history to improve

All your attempts are listed in the Submissions tab, from the most recent to the oldest. Each one shows the verdict, the score, and the date. You can expand any attempt to read its full feedback.

Compare your attempts to see if you are improving: if the first attempt was Wrong Answer and the second was Partial, you are moving in the right direction. Read the feedback from the previous attempt before submitting again.

Feedback for free text and step-by-step answers is generated by AI. It may contain inaccuracies. Use the problem's sources to verify.

Frequently asked questions

Do previous attempts disappear if I close the problem? No. The attempt history is saved to your account and is available when you open the problem again.

Can I submit again even if I already have an Accepted? Yes. You can keep submitting even after getting a correct answer. All attempts remain in the history.

Why does an attempt have no feedback? Some simple problems (for example, multiple choice with automatic grading) may not generate written feedback. In that case you will only see the verdict and the score.

What does "Hidden case" mean? It is a test case that was not shown while you were solving. Hidden cases let the system evaluate whether your solution works in situations that were not visible upfront.

Next step

• Solving a problem — how the full solving screen works.
• Hints — if the feedback is not enough, hints help you understand the concepts from scratch.
• Answer formats — the difference between numeric, multiple choice, free text, and step-by-step answers.