using System;
class Matrix<T> { 
        private int rows; 
        private int cols; 
        private T[,] matrix; 
 
        public Matrix() { 
            rows = cols = 0; 
            matrix = null; 
        } 
 
        public Matrix(int m, int n) { 
            rows = m; 
            cols = n; 
            matrix = new T[m, n]; 
        } 
 
        public T this[int i, int j] { 
            get { 
                if (i < rows && j < cols) 
                    return matrix[i, j]; 
                else 
                    throw new ArgumentOutOfRangeException(); 
            } 
            set { 
                if (i < rows && j < cols) 
                    matrix[i, j] = value; 
                else 
                    throw new ArgumentOutOfRangeException(); 
            } 
        } 
 
        public double Rows { 
            get { return rows; } 
        } 
 
        public double Cols { 
            get { return cols; } 
        } 
}

public class Test
{
	public static void Main()
	{
		Matrix<double> myMatrix=new Matrix<double>(3,2);
		myMatrix[0,0]=1.5;	
		myMatrix[0,1]=16.0;
		myMatrix[1,0]=18.0;
		myMatrix[1,1]=3.6;
		myMatrix[2,0]=7.1;
		myMatrix[2,1]=2.9;

		for(int i=0; i<3; i++)
	    {
	    	for(int j=0; j<2; j++)
				Console.Write(myMatrix[i,j] + "\t");
			Console.WriteLine();
	    }
    }
}