i find one solution that is similar
0 t% w* t. d% p( [( J4 Z& F) M, A. Qbut 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,bttvb; e" i" L7 P7 M& _0 Q
maybe there is a better one, let me see sin |