#include <iostream>
    using namespace std;
    struct OperatorA
    {
        virtual ~OperatorA()
        { 
            cout << "~OperatorA()" << endl; 
        }
        void operator delete[](void* p, size_t)
        {
            cout << "Operator A :: deleteed" << endl;
            delete [] p;
        }
    };
    struct OperatorB : OperatorA 
    {
        void operator delete[](void* p, size_t) 
        {
            cout << "Operator B :: operator deleteed" << endl;
            delete [] p;
        }
    };
    int main() 
    {
        OperatorA* ptr = new OperatorB[2];
        delete[] ptr;
    };