| i think its like this: 12乒乓球  oooooooooooo      天平 |& Q) F0 D+ y. H' T. b  K0 x2 T 1)6乒乓球 | 6乒乓球
 : n3 h" ~' X; Q) G% _: D. qwww2.tvboxnow.com2) take the heavier side then  3乒乓球 | 3乒乓球
 : n5 {! @8 V. _; gwww2.tvboxnow.com3) take the heavier side then  1乒乓球(A) | 1乒乓球(B)     with extra 1乒乓球(C)
 - A+ b# p4 s& L) `9 k0 i7 [if A > B then A is the one
 3 u5 n4 |# {, P4 S$ \www2.tvboxnow.comif B > A then B is the onetvb now,tvbnow,bttvb. g9 m; S" w% w+ N
 if A = B then C is the one
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