tvb now,tvbnow,bttvb,tv series,tv drama,movie,bt,download- M u! [! N% _7 @
* s' l% C( y7 D8 r5 n7 r公仔箱論壇210.6.90.151 H; Y- n+ `4 E" w$ ^, Etvb now,tvbnow,bttvb* n4 ^8 j' O/ z7 x
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答案:选一个囚犯出来负责关灯,其余的负责开灯,而且每人只能开一次,当这个囚犯关够99次的时候,就知道所有的囚犯都来过院子了。
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: y' z6 R* A+ oCan you make sure that is only 2 or 4 or 6......... to open the lamp? otherwise, the others do not know what station of the lamp! 2 L/ L; f* M8 x8 @" _% s9 F
please see: jar 2009-01-07 my option: all can see and say the lamp is "on" that can sure everyboby have been to the gardon! |