I tried to submit some code onto oj.uz but I received Failed verdict. I'm convinced the problem is not surrounding me but surrounding the server because these two submissions are identical but one passed and one also received Failed verdict.

https://oj.uz/submission/311279

https://oj.uz/submission/318735

Does anybody know what is going on? Is oj.uz down? When will the "Failed" submissions be rejudged?

UPD: It seems like the problem is fixed. On a general note, the "Failed" verdict may occur due to a problem with the server.