Just try and compile this simple program: > println("System"); It gives this error: "At line undefined, the submission failed to compile with the error: Error

Just try and compile this simple program: > println("System"); It gives this error: "At line undefined, the submission failed to compile with the error: Error: Sorry, but you may not use the keyword 'System'" This tool has a list of blacklisted words that can not appear in your source code.