Submission showing 0 memory

I am getting wrong answer as a result in the SEAVOTE problem of Long Challenge January, and that is fine with me, but my submission results are showing 0 memory used, can anyone explain, why does this happen? Why does a submission show 0 memory used?

Your code would have been giving WA on ALL testcases .

Can you provide another test case of this problem please??

But,When I tested my code at my pc, I was getting correct answers for the test cases given in the question.

Actual test cases are different from those given in the question

no sorry you cannot ask for test cases or codes for on-going contests…!!