dustking

i found the ans in 30 mins but dont know correct or not?
( B' G( l3 M! n. gTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。ans is too long! but concepts are something like that:
7 n6 ~. \  I% u! ftvb now,tvbnow,bttvbseprate 4 groups 3 balls in one group!
5 p0 F% ^1 f, ]5 y8 stvb now,tvbnow,bttvbthe important part is the 2nd times which need to find out the fake ball is heavier or lighter by use the normal ball that u find at the first time!
# c6 k1 k8 h) t8 Ithe last part is 1ball vs 1ball! something like that