#include <bits/stdc++.h>

using namespace std; int main() { int n, a[15], sum = 0; cin >> n; for (int i = 0; i < n; i++) { cin >> a[i]; sum += a[i]; } double x = sum * 1.0 / n; cout << fixed << setprecision(1) << "AVE=" << x << endl; for (int i = 0; i < n; i++) if (a[i] > x) cout << i + 1 << ":" << a[i] << " "; return 0; }