first, compare 6 and another 6. they must have difference.
+ v( x3 d$ X) }: D/ U, M5.39.217.77:8898second, divide those 6 heavier one into two, each has 3. u will find difference again.
* C6 x( P# Y4 V: ]7 ?& M4 Ftvb now,tvbnow,bttvbthird time, if u put 2 and they are equal, u will know the different one.
5 V% J5 x! c, Z5.39.217.77:8898so easy.... |