i know!
2 b% G L4 ^( f# V, P( f# d公仔箱論壇when they can have 15 mins discussion.
8 _6 p+ |5 b4 Zmake 1 of them to do a specific job whcih is counting
! l; p6 t( V$ H1 z7 c! ^only him can turn on off off the light.
/ |) T! z. V( w6 |- Z7 w公仔箱論壇Basically, if you are the first time to get in the room, turn on the light, 5.39.217.772 y9 J$ L8 J2 z& I/ l+ k: t0 V8 r
then wait for "the special man" to turn the light off....公仔箱論壇8 ~$ g6 ?6 L1 R% k. d; ]3 A, @; w7 R
when "the special man" count in up to 30 (included himself)
/ P$ Y1 ?8 t2 \; J8 Q7 gthen it is done! |