#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;
}
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