#include <iostream> 
    using namespace std;
    class Example
    {
        public:
        int p;
        Example(int num = 0) : p(num) {};
        int& operator[](int num)
        {
             cout << "Interview " ;
             return p;
        }
        int operator[](int num) const
        {
             cout << "Mania" ;
             return p;
        }
     };
    void foo(const Example& n)
    {
        int Res = n[2];
    }
    int main()
    {
        Example n(7);
        n[3]  = 8;
        int Res = n[2];
        foo(n);
        return 0;
    }