#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
int n, i, j, s, m;
double b, c, x, y, e;
cout << showpoint;
cout << fixed;
cout << setprecision(3);
while(cin >> n)
{
for(i=1;i<=n;i++)
{
cin >> m;
e = m;
int a[m];
s = x = y = 0;
for(j=0;j<m;j++)
{
cin >> a[j];
s = s + a[j];
}
c = s/e;
for(j=0;j<m;j++)
{
if(c<a[j])
{
x++;
}
}
b = 100/e;
y = x * b;
cout << y << "%" << endl;
}
}
return 0;
}
#include<iomanip>
using namespace std;
int main()
{
int n, i, j, s, m;
double b, c, x, y, e;
cout << showpoint;
cout << fixed;
cout << setprecision(3);
while(cin >> n)
{
for(i=1;i<=n;i++)
{
cin >> m;
e = m;
int a[m];
s = x = y = 0;
for(j=0;j<m;j++)
{
cin >> a[j];
s = s + a[j];
}
c = s/e;
for(j=0;j<m;j++)
{
if(c<a[j])
{
x++;
}
}
b = 100/e;
y = x * b;
cout << y << "%" << endl;
}
}
return 0;
}
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