i find one solution that is similar
3 g: k& R9 U0 }0 h- U1 C2 V, |: u) t5.39.217.77:8898but i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....
1 E, C2 t7 W; {3 E- a* n7 d$ D% t; l- ttvb now,tvbnow,bttvbmaybe there is a better one, let me see sin |