func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t, n, ind;     cin >> t;     while (t--) {       cin >> n;       ind = -1;       int a[n];       for (int i = 0; i < n; ++i) {         cin >> a[i];         if (a[i] % 2 == 0) ind = i;       }       if (ind != -1)         cout <<  1 n  << ind + 1 <<   n ;       else if (n > 1)         cout <<  2 n1 2 n ;       else         cout <<  -1 n ;     }   }   