#include <iostream>
 
template <typename T>
struct Atom
{
	std::aligned_storage_t<sizeof(T), alignof(T)> storage;
	template <typename... Args>
	void initialize(Args&&... args) 
	{
		new (&storage) T(std::forward<Args>(args)...);
	}
 
	T& get()
	{
		return *reinterpret_cast<T*>(&storage);
	}
 
	void destroy()
	{
		get().~T();
	}
};
 
int main() 
{
	Atom<int> a;
	a.initialize(1);
 
	Atom<int> b;
	b.initialize(2);
 
	std::swap(a, b);
 
	std::cout << a.get() << " " << b.get() << std::endl;
 
	return 0;
}

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