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。2 o: R d4 t0 @, K: F. K
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。# G, \2 Y, O' U( f! n7 |# q& k
i don't get it.. how to pick someone to record it.. when there is only 1 person allow to go out each day..and he/she will lock up later |