Submit a problem
Write a problem for coding interviews: what the function should do, a few examples everyone sees, hidden tests only the interviewer's browser gets, and a reference solution. Press Check it to run your solution against all the tests. A reviewer reads it before it joins the problem list for everyone.
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A reviewer will read your problem. Keep this private link to see its status and the reviewer's note (and to make changes if they ask for any). Anyone with the link can see your problem, so only share it with people you trust.
It is also remembered in this browser, under "Your submissions" on this page.