using System;

public class Matrix

    {

        int[,] m_data;

​

        public Matrix(int[,] data)

        {

            m_data = new int[data.GetLength(0), data.GetLength(1)];

            for (int r = 0; r < data.GetLength(0); r++)

                for (int c = 0; c < data.GetLength(1); c++)

                    m_data[r, c] = data[r, c];

        }

        public Matrix(int a, int b, int c, int d)

        {

            m_data = new int[2, 2];

            m_data[0, 0] = a;

            m_data[0, 1] = b;

            m_data[1, 0] = c;

            m_data[1, 1] = d;

        }

        public static Matrix operator *(int n, Matrix A)

        {

            return A.scalarMult(n);

        }

        public static Matrix operator +(Matrix A, Matrix B)

        {

            return A.add(B);

        }

        public Matrix add(Matrix other)

        {

            return new Matrix(m_data[0, 0] + other.m_data[0, 0], m_data[0, 1] + other.m_data[0, 1], m_data[1, 0] + other.m_data[1, 0], m_data[1, 1] + other.m_data[1, 1]);

        }

        public Matrix scalarMult(int n)

        {

            return new Matrix(n * m_data[0, 0], n * m_data[0, 1], n * m_data[1, 0], n * m_data[1, 1]);

        }

​

        public override String ToString()

        {

            String retVal = "";

            for (int r = 0; r < m_data.GetLength(0); r++)

            {

                retVal += "|";

                for (int c = 0; c < m_data.GetLength(1); c++)

                {

                    retVal += m_data[r, c];

                    if (c != m_data.GetLength(1) - 1)

                        retVal += "\t";

                }

                retVal += "|\n";

            }

            return retVal;

        }

    }

public class Program

{

    public static void Main()

    {

        //Matrix A = new Matrix(1, 2, 3, 4);

        //Matrix B = new Matrix(new int[,] {{4, 2}, {6, 3}});

        Matrix A = new Matrix(new int[,] {{4, 2, 2}, {6, 3, 2}, {3, 6, 3}});

        Matrix B = new Matrix(new int[,] {{1, 0, 3}, {4, 7, 3}, {5, 5, 1}});

//      Console.WriteLine(C);

        Console.WriteLine(A);

        Console.WriteLine("+");

        Console.WriteLine(B);

        Console.WriteLine("=");

        Console.WriteLine(A+B);

        Console.WriteLine();

        Console.WriteLine("2");

        Console.WriteLine("*");

        Console.WriteLine(A);

        Console.WriteLine("=");

        Console.WriteLine(A.scalarMult(2));

​

    }

}

​

​