#include <iostream>
#include <type_traits>
using namespace std;



template<typename T>
struct Allocator
{
    typedef T value_type;

    Allocator() noexcept {};

    template<typename U>
    Allocator(const Allocator<U>& other) throw() {};

    T* allocate(std::size_t n, const void* hint = 0)
    {
        return static_cast<T*>(::operator new(n * sizeof(T)));
    }

    void deallocate(T* ptr, std::size_t n)
    {
        ::operator delete(ptr);
    }
};

template <typename T, typename U>
inline bool operator == (const Allocator<T>&, const Allocator<U>&)
{
    return true;
}

template <typename T, typename U>
inline bool operator != (const Allocator<T>& a, const Allocator<U>& b)
{
    return !(a == b);
}



int main() {
	// your code goes here
	return 0;
}