Feel free to ask any questions related to the COJ.
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The qualifying application has only the privileges required to do so (although it was in the code, the program could not manipulate memory, file system, open network connections, etc). In addition, some functions identified as potentially dangerous, are identified in advance: so you get an "Invalid Function" veredict fron the Judge.
"Every problem has a simple, fast and wrong solution" OJ's Main Law.