1081Above 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

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 givingthe final grade (an integer between 0 and 100) of a student in the class.

输出

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

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%

#include<stdio.h>  int main()  {      int m,n,a[1000],i,j,k,s;      double b,d,c;      scanf("%d",&m);      for(i=1;i<=m;i++)      {          scanf("%d",&n);s=0;          for(j=1;j<=n;j++)          {              scanf("%d",&a[j]);              s=s+a[j];          }          b=s/n;c=0;          for(j=1;j<=n;j++)          {              if(a[j]>b)                  c=c+1;          }          d=c/n*100;              printf("%.3lf%%\n",d);      }      return 0;  }