i find one solution that is similar
1 j5 w7 w# W7 D( C# {- \7 Btvb now,tvbnow,bttvbbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....
9 l$ Z9 s# Y, p7 c& q& P& x3 e: w$ hmaybe there is a better one, let me see sin |