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输出格式理解错了 不理解错的话，程序太简单了

Posted by secret_long at 2005-11-04 13:17:44 on Problem 1004 
我把题目输出格式理解的太复杂了
我把它理解成要精确到美分，并且输出格式是**.**
平均正好是整数的，输出时也要按照上面的格式，即**.00
平均正好是**.*,即正好到小数点后一位，输出格式是：**.*0
如果平均的小数点位数多于2位，则按四舍五入的方法精确到小数点后两位，其输出格式：**.**
     
我是这样理解的 编了好久才编出来
不过我的很复杂 但也通过了
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