My code was compiled error but FPC 2.4.2 on my computer compiles normal .
code : 6671643
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You should probably look at the error provided by the compiler in this case. I don't know if there is an easier way, but you can use the custom invocation feature to see the compilation error:
http://codeforces.me/contest/431/customtest
program.pas(19,12) Fatal: Syntax error, "identifier" expected but "TRY" found
From which I deduce that you can't use try as a procedure name. (It's probably a reserved word because of try/except).
I think it does not affect, I still compile normally on FPC 2.4.2 and on many other compilers