sky888

put six on each side first
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$ {9 E: r/ p& ^+ [  l$ H公仔箱論壇from the heavier six, split it to three on each side# u3 m* d2 ]% M# Z- }) U! j' |
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then 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