easy, one minutes i solve the problem
* h4 j7 m- S' c% wtvb now,tvbnow,bttvbdivide into half, mean 6/ 66 a- i- k# T9 H
take the heavier 6 ping pong
! B" [9 j% o0 f1 x4 u7 p: K- Edivide into 3/3, take the heavier 3
) ?5 L; l/ {# W8 R5 _5.39.217.76take the the other 3 that have the equal weight, switch each to measure, the most important things is labeling the ping pong so that we can recognize |