SiRgOo

put six on each side .. take the heaviler side and put three on each side
( ~# O, \5 @  M( X/ A5.39.217.77take two balls out of the heaviler side and put on each side 公仔箱論壇2 Z2 ~- C1 H2 L+ V" K
if they r the same the reminder is the heavy ball otherwise u know which one is the heavy ball