백준 4344 C++

#include <iostream>
#define max 1000
using namespace std;

void input(int n){
    float arr[max];
    
    for(int i=0; i<n; i++){
        double average = 0.0;
        int m,cnt=0;
        cin >> m;

        for(int j=0; j<m; j++){
            cin >> arr[j];
            average += arr[j];
        }
        average = average/m;
        
        for(int j=0; j<m; j++){
            if(arr[j] > average) cnt++;
        }
        cout<< fixed;
        cout.precision(3);
        cout << (double)cnt/m * 100.0 << "%" << endl;
    }
}

int main(){
    int n;
    cin >> n;

    input(n);

    return 0;
}