Above Average

2020年1月17日 1023点热度 0人点赞 0条评论

Above Average

时间: 1ms        内存:128M

描述:

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

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. 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:

输出:

示例输入:

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

示例输出:

40.000%
57.143%
33.333%
66.667%
55.556%

提示:

参考答案:

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