week1_averagetemperature

#include<iostream>
#include<vector>
using namespace std;
double aver(vector<int64_t> select, int64_t size) {
    int64_t sum = 0;
    for (auto s : select) {
        sum += s;
    }
    double result = (sum / size);
    return result;
}
int main() {
    int size;
    cin >> size;
    vector<int64_t> data(size);
    for (int i = 0;
        i < size; ++i) {
        cin >> data[i];
    }
    vector<double> days;

    double day = 0;
    int index = 0;
    double result = aver(data, size);

    for (auto& s : data) {
        ++index;
        if (s > result) {
            ++day;
            days.push_back(index);
        }
    }
    cout <<day << '\n';
    for (const auto& s : days) {
        cout << s-1 << ' ';
    }
    //cout << aver(data, size) << '\n';

}