wasape

i think its like this: 12乒乓球  oooooooooooo      天平 |
4 w& r5 P& T6 W6 ]2 n1)6乒乓球 | 6乒乓球! Z+ s% R- t/ o0 u0 z9 k
2) take the heavier side then  3乒乓球 | 3乒乓球tvb now,tvbnow,bttvb8 ]4 B. I7 U, E1 Z, ~5 G( L
3) take the heavier side then  1乒乓球(A) | 1乒乓球(B)     with extra 1乒乓球(C)
8 u. u+ X/ n6 k) F9 K7 C2 k% yif A > B then A is the one+ k0 h0 O, U% y( D0 u2 @
if B > A then B is the one
$ }' f+ z  I6 U; fif A = B then C is the one