uva 10370 - Above Average

 

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

int main()
{
    unsigned C, N, tot_gra, aver, abo_c, gra[10010];
    float perc;
    int i;
    cin >> C;
    while(C--)
    {
        cin >> N;
        tot_gra = 0;    // tot_gra: total_grade
        for(i = 1; i <= N; i++)
        {
            cin >> gra[i];
            tot_gra += gra[i];
        }

        aver = tot_gra / N;

        abo_c = 0;
        for(i=0; i <= N; i++)
            if(gra[i] > aver)
                abo_c ++;

        perc = float(abo_c) / N * 100;
        printf("%0.3f%%\n", perc);
    }
    return 0;
}