1a1.cpp

toj1412

#include<iostream>
#include<iomanip>

using namespace std;

int main()
{
	int cases;
	cin>>cases;
	while(cases--)
	{
		int studentno;
		cin>>studentno;
		int score[1001];
	    for(int i=1;i<=studentno;i++)
		{
			int temp;
			cin>>temp;
			score[i]=temp;
		}
		double total(0.0);
	    for(int i=1;i<=studentno;i++)
		{
			total=total+score[i];
        }
        double ave;
        ave=total/studentno;
        int goodno(0);
        for(int i=1;i<=studentno;i++)
        {
                if(score[i]>ave)
                {goodno++;}
        }
        double goodrat;
        goodrat=double(goodno)/double(studentno)*100;
        cout<<setprecision(3)<<fixed<<goodrat<<"%"<<endl;
  }


}