put six on each side first
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. i+ t9 o4 |2 k7 `& O公仔箱論壇from the heavier six, split it to three on each side8 j5 U$ A, V: t* e: K
8 ^& L; ~# `" q. w$ x6 L! Utvb now,tvbnow,bttvbthen there is three left, put one on each side, if one is heavier then that is it, if they are balanced then last one is heavy one |