func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     int t = 1;     cin >> t;     while (t--) {       int n, mx = -1;       cin >> n;       int arr[n];       for (int i = 0; i < n; i++) {         cin >> arr[i];         mx = max(mx, arr[i]);       }       int ans = -1;       for (int i = 1; i < n; i++)         if (arr[i] == mx && arr[i - 1] != mx) ans = i + 1;       for (int i = 0; i < n - 1; i++)         if (arr[i] == mx && arr[i + 1] != mx) ans = i + 1;       cout << ans << (  n );     }     return 0;   }   