It is -possible-. Not always 100% guaranteed, but it is possible.
If they all go out, 1min. If they all come back, 1min. If none of them lie, you all walk to Morroc. 1min. We'd have to assume that the -within- 3 minutes means less than or equal too, though. =P
English: Take that, maths!
<3 Loopoles.
And in my own thread, I said that only players cannot edit.
Therefore:
Edit button: Take that, English!
(I'll allow you to make a 2nd post to find the 'real method' :p)