1st pretest has failed 2 times for this problem
Reason seems something absurd.
Can't find file C:\Contesters\Work\invoker-prod\work\codeforces2\8d52aa0078fe20a14680b3cd00605872\check-c0e5d9f7aa08d65d99f1b554204f7953\run\output.txt invokerId=261ec12cf78624c9d6a2c0c816d47728, location=3232047280 (1) Please help me. 
Looks like definite Codeforces bug to me. MikeMirzayanov?
UPD: I'm wrong, see comment below by hugopm.
The problem statement say that you must write the output data in the file output.txt, not in the standard output. Anyway, the error returned by the checker isn't very clear...
Thanks, I missed it.