// Contact
Get in touch
Questions about a tutorial, a bug in the code editor, a wrong answer in a quiz, or an idea for something we should build — it all lands in the same inbox. Real replies, no ticket bots.
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// Common questions
Answers before you ask
How fast do you reply?
We read everything and usually respond within 2–3 working days. Bug reports with clear reproduction steps get looked at first.
I found a mistake in a tutorial.
Send the page URL and the exact line or output that's wrong. Corrections are usually shipped within a week.
My code ran differently here than on my machine.
The online editor runs each submission in a sandbox with fixed time and memory limits, so long-running or memory-heavy programs can behave differently. Include your language, the problem slug, and the submitted code.
Can I request a topic or problem?
Yes — pick Feedback or feature request in the form and tell us what you'd like covered. Requests that come up repeatedly get prioritised.
How do I delete my account and data?
Email us from the address on your account with the subject Account deletion. See the Privacy Policy for what gets removed and what we keep.