#include <iostream>
using namespace std;
 class Matrix
 {
 public:
 Matrix();
 Matrix(Matrix &obj);
 Matrix(int row, int col);
 ~Matrix();
 friend std::istream &operator >> (std::istream &is, Matrix &obj);
 friend std::ostream &operator << (std::ostream &os, const Matrix &obj);
 };

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