2350：Above Average

题目描述

It is said that 90% of frosh expect to be above average in their class. You are to provide a reality check.

输入解释

The first line of standard input contains an integer C, the number of test cases. C data sets follow. Each data set begins with an integer, N, the number of people in the class (1 <= N <= 1000). N integers follow, separated by spaces or newlines, each giving the final grade (an integer between 0 and 100) of a student in the class.

输出解释

For each case you are to output a line giving the percentage of students whose grade is above average, rounded to 3 decimal places.

输入样例

5
5 50 50 70 80 100
7 100 95 90 80 70 60 50
3 70 90 80
3 70 90 81
9 100 99 98 97 96 95 94 93 91

输出样例

40.000%
57.143%
33.333%
66.667%
55.556%

该题目是Virtual Judge题目，来自北京大学POJ

题目来源 Waterloo local 2002.09.28

源链接： POJ-2350

最后修改于 2020-10-29T06:30:21+00:00 由爬虫自动更新

共提交 0 次

通过率 --%

时间上限	内存上限
1000	65536