first, compare 6 and another 6. they must have difference. 5.39.217.77:88982 |: X7 v+ w/ C a3 t4 l( S
second, divide those 6 heavier one into two, each has 3. u will find difference again.0 ~# ]- H* @8 v9 ~8 ]$ f8 Q
third time, if u put 2 and they are equal, u will know the different one.
& h/ K( J) Y, \) U6 c: K6 Utvb now,tvbnow,bttvbso easy.... |