i dunno if i am correct but sounded too easy, mabbe i get it wrong
" O0 q% j4 A: Y9 p. N4 F
! ?0 p: W$ W; u/ F* s* s) s6 _ 6 (take the heavier side)) E- V( M& \! g4 P7 m
3_3 (take the heavier side)- B. t3 Z! S$ J# T
1_1( A: if same then the remaining is the heavier)公仔箱論壇& W; U: V8 v2 [" | ~8 R/ }
(b: if on of it is heavier than the other, then must be that lar) |