easy, one minutes i solve the problem
% N; M D4 f, |0 @3 c公仔箱論壇divide into half, mean 6/ 6
; Y A( w' s# Y0 \公仔箱論壇take the heavier 6 ping pong
" k/ `9 S7 A7 [6 E. A% j% t+ f5.39.217.77:8898divide into 3/3, take the heavier 30 U1 o7 f V5 Y2 s
take 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 |