球钟问题描述:球钟是一个利用球的移动来记录时间的简单装置。它有三个可以
容纳若干个球的指示器：分钟指示器，五分钟指示器，小时指示器。若分钟指示
器中有2个球，5分钟指示器中有6个球，小时指示器中有5个球，则时间为5:32。(Ball clock problem descr iption: the ball clock is a simple device that USES the ball to record time.It has three
Indicators for several balls: minute indicator, five-minute indicator, hour indicator.Minute indication
There are two balls in the device, six in the five-minute indicator, five in the hour indicator and 5:32 in time.)