i find one solution that is similar
2 S& }9 h' j! m2 Z8 Z$ E) otvb 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....
- o( O+ e. T, b1 o. L+ [, O, s; H* y5.39.217.77maybe there is a better one, let me see sin |