一款计算器，最好的功能就是：可以计算小学奥数题！（当然不能太难）-A calculator, the best feature is: can calculate the primary Mathematical Olympiad title! (Of course can not be too difficult)

它适用于学前和小学阶段的儿童进行计算锻炼，本程序可以进行难度、题型、时间设置。并能实现自动出题，批题，也可以将试题按设置要求自动输出-It is suitable for pre-school and primary school children in the calculation exercise, the program can be difficult, questions of the time settings. And can automatically a problem, g