func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     int a[n];     bool f = false;     for (int x = 0; x < n; x++) {       cin >> a[x];       if (a[x] == 1) f = true;     }     if (f) {       cout << -1;     } else       cout << 1;     return 0;   }   