4 times are enough for 42 balls, you need 5 times.

来源: 于 2010-05-02 14:12:59 [旧帖] [给我悄悄话] 本文已被阅读：次

Welcome back.I also want quit,but I can't.Your formula are quite good,but can improve.If 3 times were not enough for 13 balls,I would be totally wrong.Have a nice day.