i know!
- ^- B; S% g% K( v公仔箱論壇when they can have 15 mins discussion.公仔箱論壇+ Y6 w# b0 c# C- ?
make 1 of them to do a specific job whcih is counting5.39.217.77:8898/ R) Y/ V4 T0 Q" D2 _
only him can turn on off off the light.公仔箱論壇9 k" s: t7 o3 i! Z0 M$ C$ ?
Basically, if you are the first time to get in the room, turn on the light, 4 @% J9 ~2 X# n) Y1 d9 n- f* K
then wait for "the special man" to turn the light off....
: z) F! m* |& g* P7 d# Nwhen "the special man" count in up to 30 (included himself)公仔箱論壇1 j4 ~6 e+ Z4 a) {. }
then it is done! |