#include <iostream>
// m columns, n lines
class Matrix {
public:
    Matrix(size_t m, size_t n, int value) : m_(m), n_(n), mx_(new int*[m]) {
        for (size_t i = 0; i < m; ++i) {
            for (size_t j = 0; j < n; ++j) {
                mx_[i][j] = value;
            }
        }
    }

    Matrix& operator=(Matrix&& new_matr) {
        if(this == std::addressof(new_matr)){
            return *this;
        }
        for (size_t i = 0; i < m_; ++i) {
            delete[] mx_[i];
        }
        delete[] mx_;
        mx_ = new_matr.mx_;
        new_matr.mx_ = nullptr;
        new_matr.n_ = 0;
        new_matr.m_ = 0;
        return *this;
    }

    Matrix& operator=(const Matrix& new_matr) {
        if(this == std::addressof(new_matr)){
            return *this;
        }
        for (size_t i = 0; i < m_; ++i) {
            delete[] mx_[i];
        }
        delete[] mx_;
        mx_ = new int*[new_matr.m_];

        for (size_t i = 0; i < new_matr.m_; ++i) {
            for (size_t j = 0; j < new_matr.n_; ++j) {
                mx_[i][j] = new_matr.mx_[i][j];
            }
        }
    }




    ~Matrix() {
        for (size_t i = 0; i < m_; ++i) {
            delete[] mx_[i];
        }
        delete[] mx_;
    }
private:
    int** mx_;
    size_t m_;
    size_t n_;
};