i find one solution that is similar
. _4 Z, C: W* V, e) Q% G+ zos.tvboxnow.combut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....
. X9 B/ p! q8 `; X4 ~: S3 P6 gos.tvboxnow.commaybe there is a better one, let me see sin |