title: Number Ordered Pairs Ai Aj 0
signature: function numberOrderedPairsAiAj0(a, n) {
source_py: def number_ordered_pairs_ai_aj_0(a, n):
      count = 0
      for i in range(0, n):
          for j in range((i + 1), n):
              if ((a[i] & a[j]) == 0):
                  count += 2
      return count
source_cpp: int number_ordered_pairs_ai_aj_0(vector<int> a, int n) {
    int count = 0;
    for ( int i = 0;
    i < n;
    i ++ ) {
      for ( int j = i + 1;
      j < n;
      j ++ ) if ( ( a [ i ] & a [ j ] ) == 0 ) count += 2;
    }
    return count;
  }