i find one solution that is similar
; m1 ^& X/ ]/ h) j* Q1 m- m+ Q+ Ztvb 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) G6 k. h6 n1 Z, ]% K# d
maybe there is a better one, let me see sin |