func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     std::ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     long long int n, even = 0, odd = 0;     cin >> n;     long long int a[n];     for (long long int i = 0; i < n; i++) cin >> a[i];     if (n == 1)       cout << a[0] <<   n ;     else {       sort(a, a + n);       long long int flag = 0;       for (long long int i = 1; i < n; i++) {         if (a[i] % a[0] != 0) {           flag = 1;           break;         }       }       if (flag == 0)         cout << a[0] <<   n ;       else         cout <<  -1               <<   n ;     }     return 0;   }   