Bash: One-liner to exit with the opposite status of a grep command?

Question

How can I reduce the following bash script?

grep -P \"STATUS: (?!Perfect)\" recess.txt && exit 1
exit 0

It seems like I should be able

Answer 1

Use the special ? variable:

grep -P "STATUS: (?!Perfect)" recess.txt
exit $((1-$?))

(But note that grep may also return 2, so it's not clear what you'd want to occur in such cases.)