first, compare 6 and another 6. they must have difference.
6 B5 _* }' K1 h4 t% O, @second, divide those 6 heavier one into two, each has 3. u will find difference again.tvb now,tvbnow,bttvb7 z, t0 g9 ?% G1 s* V
third time, if u put 2 and they are equal, u will know the different one.
2 U, Z) o5 S; m! i: r) {: H/ e9 Wtvb now,tvbnow,bttvbso easy.... |