please help!! i tried to submit my solution to the problem E many times(not official,for practice), but my solution couldn’t be received. the screen says “Ooops! Something has broken down in Codeforces. Do not panic, you can try to reload the page or return Home. Anyway we will carefully read megabytes of logs, analyze stacktraces and fix the problem.”. i tried submitting a empty-code to it,and the code was received(of course, wrong answer). and i tried log-out and log-in,but the situation didn’t improve. ??why?? my code is no compile-error, or memory limit exeed. also, i tried the custom test,and the custom test was no problem.

thank you for fixing the problem ^_^ my cause of trouble is using the "%lld". now,the program doesn't be received,too,however,the screen told me a proper warning.