#include<iostream>
using namespace std;
class Add {
private:
	int x, y;
public:
	Add(int aa = 0, int bb = 0) {
		x = aa;
		y = bb;
	}
	void display();
	friend Add operator+(Add &t1, Add &t2);
	friend Add operator-(Add &t1, Add &t2);
};
 Add operator+(Add &t1, Add &t2)
{
	 return (t1.x + t2.x, t1.y + t2.y);
}
 Add operator-(Add &t1, Add &t2)
 {
	 return (t1.x - t2.x, t1.y - t2.y);
 }
 void Add::display()
 {
	 cout << "(" << x << "," << y << ")" << endl;
 }
int main()
{
	Add t1(1, 2);
	Add t2(3, 4);
	Add t3, t4;
	t3 = t1 + t2;
	t4 = t2 - t1;
	t3.display();
	t4.display();
	system("pause");
	return 0;
}

#include<iostream>
using namespace std;
class Out {
private:
	int x;
	int y;
public:
	Out(int aa = 0, int bb = 0)
	{
		x = aa;
		y = bb;
	}
	friend ostream& operator<<(ostream& os, const Out& a)
	{
		os << "(" << a.x << "," << a.y << 'i' << ")" << endl;
		return os;
	}
	friend istream& operator >> (istream& is, Out& a)
	{
		is >>a.x >> a.y;
		return is;
	}
};
int main()
{
	Out t1;
	cin>>t1;
	cout << t1;
	system("pause");
	return 0;
}