#include <iostream>
using namespace std;

struct MJ {
	void GetLowEdgeEnergy(size_t arg) {
		cout << "GetLowEdgeEnergy, arg = " << arg << endl;
	}
	void operator ()(size_t arg) {
		cout << "operator (), arg = " << arg << endl;
	}
};

int main() {
	MJ mj;
	mj.GetLowEdgeEnergy(42);
	mj(42);
	return 0;
}