In 173E, I've been getting denial of judgement several times. I tested with a previously accepted solution, and it resulted in the same denial of judgement verdict. On further investigation, I observed that test case no 64 is not being shown, like here-
Perhaps it's missing, due server-side data being corrupted?(if that makes any sense)
Please, Mr MikeMirzayanov, if you could look into this issue, it's a pretty significant one, in my opinion.