#include <iostream>
using namespace std;

class Damage
{
public:
    // ...
    operator int ()
    {
        return this->GetDamage();
    }
    
    int GetDamage()
    {
    	return 3;
    }
};

int main() {
	Damage d;
	int health = 4;
	
	std::cout << health - d << std::endl;
	
	return 0;
}