first, compare 6 and another 6. they must have difference.
6 W& ~& B8 `: [( U$ T. Nsecond, divide those 6 heavier one into two, each has 3. u will find difference again.
2 R% o b+ q, a1 J# f5.39.217.77third time, if u put 2 and they are equal, u will know the different one.
7 ~+ Y) {/ U! w3 X, X" A& Vtvb now,tvbnow,bttvbso easy.... |