UVA 10370

#include <iostream>
#include <cstdio>
using namespace std ;

int main()
{
int c ;
cin >> c ;
while(c--)
{
int n ;
cin >> n ;
int d
;
double sum = 0.0 ;
for ( int i = 0 ; i < n ; ++i)
cin >> d[i] ;
for ( int i= 0 ;i < n ;++i)
sum += d[i] ;
double avg = sum / n ;
int cnt = 0 ;
for ( int i = 0 ; i< n ;++i)
if (d[i] > avg) ++cnt ;
printf("%.3lf%%\n", cnt *100.0/n) ;
}
return 0 ;
}