easy, one minutes i solve the problem
% {5 T/ h# Z; y0 l8 z3 O; @# \TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。divide into half, mean 6/ 6
& B( j% m! Q2 [5 e# I) ]tvb now,tvbnow,bttvbtake the heavier 6 ping pong
8 H0 Q0 G$ V8 i7 J2 o6 }* Pdivide into 3/3, take the heavier 3
; s& r1 x/ z" M4 u* Ptake 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 |