func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int long long n, i, k = 0;     cin >> n;     double a[n + 5], s = 0, b[n + 5];     for (i = 0; i < n; i++) {       cin >> a[i];       s += a[i];     }     for (i = 0; i < n; i++) {       double r = (s - a[i]) / (n - 1);       if (r == a[i]) {         b[k] = i + 1;         k++;       }     }     cout << k << endl;     for (i = 0; i < k; i++) {       cout << b[i] <<    ;     }     cout << endl;     return 0;   }   