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* D2 ?- U$ w6 W' k
5.39.217.76# T, } u- O, o/ Y" S2 L/ U! m
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 |