i know!
# N3 U# D- P$ T5 i) K: d2 ktvb now,tvbnow,bttvbwhen they can have 15 mins discussion.tvb now,tvbnow,bttvb x6 [2 I T0 `- q9 k, |; x
make 1 of them to do a specific job whcih is counting" u' W. `9 A6 ?0 c3 x% `
only him can turn on off off the light.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。" b: L1 ]0 P! [2 M% H; Z9 m
Basically, if you are the first time to get in the room, turn on the light,
$ p" C. l0 c$ A* g. {: ? {5 w( jthen wait for "the special man" to turn the light off....
8 h9 k' ^7 a7 k9 y3 ^# w7 `4 S/ owhen "the special man" count in up to 30 (included himself)
X5 Z. V* Z; L; ^7 u& q- dthen it is done! |