Free Pascal Compiler version 3.0.0 [2015/11/16] for i386
Copyright (c) 1993-2015 by Florian Klaempfl and others
Target OS: Win32 for i386
Compiling foo.pas
foo.pas(12,36) Error: Operator is not overloaded: "Array[0..20] Of Array[0..20] Of Int64" + "Array[0..20] Of Array[0..20] Of Int64"
foo.pas(14,8) Warning: Variable "total" does not seem to be initialized
foo.pas(16,4) Fatal: There were 1 errors compiling module, stopping
Fatal: Compilation aborted
Error: C:\FPC\3.0.0\bin\i386-win32\ppc386.exe returned an error exitcode