#include <iostream>
#include <vector>
 
using namespace std;
 
int main() {
  int n;
  cin >> n;
  vector<int> temperatures(n);
  int sum = 0;
  for (int& temperature : temperatures) {
    cin >> temperature;
    sum += temperature;
  }
 
  int average = sum / n;
  vector<int> result_indices;
  for (int i = 0; i < n; ++i) {
    if (temperatures[i] > average) {
      result_indices.push_back(i);
    }
  }
 
  cout << result_indices.size() << endl;
  for (int result_index : result_indices) {
    cout << result_index << " ";
  }
  cout << endl;
 
  return 0;
}

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