func_code_string: #include <bits/stdc++.h>   using namespace std;   const int mod = 1e9 + 7;   const unsigned long long inf = 1e18;   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     int n;     cin >> n;     vector<unsigned long long> a(n);     for (int i = 0; i < n; i++) {       cin >> a[i];     }     unsigned long long ans = 0;     for (int i = 0; i < n; i++) {       for (int j = i; j < n; j++) {         for (int k = j; k < n; k++) {           ans = max(ans, (a[i] | a[j] | a[k]));         }       }     }     cout << ans <<   n ;   }   