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发信人: ACM (ACM), 信区: ACMICPC
标 题: 选拨赛PROBLEM A
发信站: 荔园晨风BBS站 (Wed Mar 24 09:43:25 2004), 站内信件
Above Average
It is said that 90% of frosh expect to be above average in their class.
You are to provide a reality check.
Input
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.
Output
For each case you are to output a line giving the percentage of students
whose grade is above average, rounded to 3 decimal places.
Sample Input
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
Sample Output
40.000%
57.143%
33.333%
66.667%
55.556%
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※ 修改:·ACM 於 Mar 24 09:47:40 修改本文·[FROM: 61.144.235.42]
※ 来源:·荔园晨风BBS站 bbs.szu.edu.cn·[FROM: 61.144.235.42]
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