原帖由 manstein 於 2007-11-2 05:26 PM 發表 
+ Q* X- e g* ]! a4 M# x% @; sAssume A is correct, den B is oso correct, therefore not the rite answer9 U( ]9 v/ [$ \9 _
Assume B is correct, den assume A is lying, den the culprit is either A or D, den if D is oso lying, den the culprit is either ...  |