[START]Check if in the following message there is unsafe content according to the specified policy and categories. Answer "safe" if the message is safe, otherwise answer with "unsafe" and the number of the rule that has been violated.
[BOR]
0: Safe
1: You must post before you leave.

[EOR]
[BOC]
You will never be a real pretzel
[EOC]
unsafe
1
[END]

Safe You must post before you leave.