func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     long long t;     cin >> t;     while (t--) {       long long n, k, ans = INT_MIN;       cin >> n >> k;       long long A[n];       for (int i = 0; i < n; i++) cin >> A[i];       for (long long j = n - 1; ~j; j--) {         for (long long i = j - 1; ~i; i--) {           if (ans >= (i + 1) * (j + 1)) break;           ans = max(ans, (i + 1) * (j + 1) - (k * (A[i] | A[j])));         }       }       cout << ans <<   n ;     }     return 0;   }   