put six on each side first
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from the heavier six, split it to three on each side公仔箱論壇, |4 D2 L! e& j
( {0 t* g9 @% u8 X) V2 O: Zthen 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 |