func_code_string: #include <bits/stdc++.h>   using namespace std;   map<long long int, long long int> mp;   int main() {     int n, c = 0, x = 0, a[200], i, j;     cin >> n;     for (i = 0; i < n; i++) {       cin >> a[i];       c += a[i];     }     if (n == 1) x = 1;     if (n == 2 && a[0] == a[1]) x = 1;     if (x == 1)       cout << -1;     else {       cout << 1 << endl;       for (i = 0; i < n; i++) {         if (2 * a[i] != c) {           cout << i + 1;           break;         }       }     }     return 0;   }   