i find one solution that is similartvb now,tvbnow,bttvb8 k& r- t( S" y, x( W
but i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....
8 I% U( e2 X9 ?+ n8 V0 C) p1 Qmaybe there is a better one, let me see sin |