I fully understand that it might happen that there is not worst case test case for all algorithms solving the problem. Also I’m not a fan of changing the test cases during the contest. But I think that I’s good idea to maintain test cases in practice room to be as good as possible.
- problem Next Palindrome, test cases are incorrect, instead of palindrome greater than N it checks palindromes greater or equal to N
- weak test cases for Remember the recipe, were discussed at editorial page
- actually brute force approach got AC in The Gray-Similar Code
Is it possible to create test case and rejudge all submissions for some problem in practice room?
I can imagine more difficult process: specifying also the solution I’d like to challenge and if it is correct challenge, then all submissions will be rejudged.