uva 10370 - Above Average

 1 #include <iostream>
 2 #include <cstdio>
 3 using namespace std;
 4 
 5 int main()
 6 {
 7     unsigned C, N, tot_gra, aver, abo_c, gra[10010];
 8     float perc;
 9     int i;
10     cin >> C;
11     while(C--)
12     {
13         cin >> N;
14         tot_gra = 0;    // tot_gra: total_grade
15         for(i = 1; i <= N; i++)
16         {
17             cin >> gra[i];
18             tot_gra += gra[i];
19         }
20 
21         aver = tot_gra / N;
22 
23         abo_c = 0;
24         for(i=0; i <= N; i++)
25             if(gra[i] > aver)
26                 abo_c ++;
27 
28         perc = float(abo_c) / N * 100;
29         printf("%0.3f%%\n", perc);
30     }
31     return 0;
32 }