i find one solution that is similar
9 f8 V, c( E. r( w' D公仔箱論壇but 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% `, V1 W: i& P- \ O* V/ n; \
maybe there is a better one, let me see sin |