stupid818

first, compare 6 and another 6. they must have difference.
# e# i+ e: L. P5.39.217.77second, divide those 6 heavier one into two, each has 3. u will find difference again.
" ^) B0 k. `% s& L% N% athird time, if u put 2 and they are equal, u will know the different one.5.39.217.779 T' v) ~" s( Y0 I% r2 [& r
so easy....