stupid818

first, compare 6 and another 6. they must have difference.
- r1 ]6 m7 f* |& e6 g0 Psecond, divide those 6 heavier one into two, each has 3. u will find difference again.tvb now,tvbnow,bttvb) z6 j  a- ?! k& B' z$ q. p$ _0 M8 Q
third time, if u put 2 and they are equal, u will know the different one.
2 r, ?& @4 E  W( x& a2 wso easy....