I have sent a solution in PyPy 3 and got IDLENESS_LIMIT_EXCEEDED on test #2 http://mirror.codeforces.com/contest/950/submission/36179906
Then I deleted or added some empty strings in my solution (because Codeforces forbids to send identical code) and got Accepted. http://mirror.codeforces.com/contest/950/submission/36180011
Explain me, please, what happens?