using System;

namespace ConsoleApp20
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int[,] numbers = {
                { 1, 2, 3 },
                { 4, 5, 6 },
                { 7, 8, 9 } };
            int correction = 1;
            int lineSum = 0;
            int columnMultiplication = 1;
            int matrixLine = 2;
            int matrixColumn = 1;

            for (int i = 0; i < numbers.GetLength(0); i++)
            {
                for (int j = 0; j < numbers.GetLength(1); j++)
                {
                    Console.Write(numbers[i, j] + " ");
                }

                Console.WriteLine();
            }

            for (int i = 0; i < numbers.GetLength(1); i++)
            {
                lineSum += numbers[matrixLine - correction, i];
            }

            for (int i = 0; i < numbers.GetLength(0); i++)
            {
                columnMultiplication *= numbers[i, matrixColumn - correction];
            }

            Console.WriteLine($"Сумма {matrixLine} строки - {lineSum}, произведение {matrixColumn} столбца - {columnMultiplication}.");
        }
    }
}