i find one solution that is similar
7 b6 }; Z8 m- B( S& v4 M5 pbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....tvb now,tvbnow,bttvb1 Q# z% a$ w8 O9 f
maybe there is a better one, let me see sin |