i find one solution that is similar
, a0 |3 m d% t% {, k" f7 r7 M% ~, b5 s5.39.217.76but i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....公仔箱論壇4 y' U q2 A: c
maybe there is a better one, let me see sin |