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| #include <iostream>
#include <vector>
#include <algorithm>
#include <iomanip>
#pragma warning(disable:4996)
using namespace std;
int main(void) {
int num, casenum, score, cnt;
double sum, avg;
vector<int> arr;
vector<int>::iterator it;
cin.tie(NULL);
ios_base::sync_with_stdio(false);
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
cin >> num;
for (int i = 0; i < num; i++) {
cin >> casenum;
sum = 0;
arr.clear();
avg = 0;
cnt = 0;
for (int j = 0; j < casenum; j++) {
cin >> score;
arr.push_back(score);
sum += score;
}
avg = sum / casenum;
for (it = arr.begin(); it != arr.end(); it++) {
if ((*it) > avg) cnt++;
}
cout << fixed << setprecision(3);
cout << (double)cnt/casenum*100 << "%\n";
}
#ifndef ONLINE_JUDGE
fclose(stdin);
fclose(stdout);
#endif
return 0;
}
|