Hey MikeMirzayanov , We want a feature for downloading test cases, It will be very helpful for users like me, Like this soln, which is failing for the 515th test case https://mirror.codeforces.com/contest/1672/submission/154769894, this one failing on https://mirror.codeforces.com/contest/1644/submission/154275545 62 test case, I have already thought a lot, but not able to find a test case, which may fail my solution, So with this feature, you will allow coders like me, to debug my solution faster, and increase the ability to code tougher problems

Also,I am a software developer,and I can help the codeforces team to code this feature for free,

I am facing a problem, when I create a mashup or gym contest of my own problems then on the wrong answer, I am able to see the test case which gave the wrong answer, Is there a way to hide test cases in a mashup contest like a real contest, Because of this i see the test case and correct it,which then cause a problem in real contest when we cant see the test case. Any help will be appreciated.