stupid818

first, compare 6 and another 6. they must have difference. / E5 L0 N! h5 G+ Q
second, divide those 6 heavier one into two, each has 3. u will find difference again.5.39.217.77$ }2 j* z+ g. d, p; s9 S
third time, if u put 2 and they are equal, u will know the different one.
2 I2 F( h- H( J& p: S) x& d! y' itvb now,tvbnow,bttvbso easy....