[问题描述]

现要开发一个开放式的高校本科招生最低录取分数线的查询系统，供师生和学生家长等查询，高校自愿放入该校的信息，可能随时有高校加入。要求实现的查询功能有：

（1）查询等于用户给定分数的高校；

（2）查询大于（或小于）用户给定分数的高校；

（3）查询最低录取分数线在用户给定的分数段中的高校。

[基本要求]

（1）要求有简单的菜单界面；

（2）数据规模最少不得低于50。

[测试数据]

自行设定

-[Problem Descr iption] is to develop an open admission college undergraduate admissions lowest score of the query system for teachers and parents of students and other inquiries, the university voluntarily placed in the school' s information, colleges and universities may join at any time. Required to achieve the query functions are: (1) query the user for a given fraction is equal to the college　(2) query is larger than (or less) given by the user scores of colleges and universities　(3) check the minimum entry score in the score given by the user segment of the university. [Basic requirements] (1) requires a simple menu interface　(2) Data shall not be less than the minimum size of 50. [Test data] set their own