UVA-10370

/********************************************************************
@file     Main_practise.cpp
@date     2014-8-22
@author   Tiger
@brief    Problem D: Above Average
********************************************************************/
#include <cstdio>
//#define OJ

int main(int argc, const char* argv[])
{

#ifdef OJ
    freopen("input.txt", "r", stdin);
#endif

    int nTestCases = 0;
    scanf("%d", &nTestCases);
    while (nTestCases--)
    {
        int nStudents = 0;
        scanf("%d", &nStudents);

        double* pStudentScores = new double[nStudents];
        double fTotalScore = 0;
        for (int i=0; i<nStudents; ++i)
        {
            scanf("%lf", &pStudentScores[i]);
            fTotalScore += pStudentScores[i];
        }
        
        double fAverageScore = fTotalScore / nStudents;
        int nGoodStudents = 0;
        for (int i=0; i<nStudents; ++i)
        {
            if (pStudentScores[i] > fAverageScore)
            {
                ++nGoodStudents;
            }
        }

        double fAboveAverage = (static_cast<double>(nGoodStudents) / nStudents)*100;
        printf("%.3f%%\n", fAboveAverage);
    }

    return 0;
}