using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp10
{
    class Program
    {
        const int len = 4;
        const int len2 = 2;
        static int[,] Input()
        {

            int[,] massive = new int[len, len2];
            for (int i = 0; i < len; i++)
            {
                for (int j = 0; j < len2; j++)
                {
                    Console.WriteLine("Введите " + j + " элемент");
                    massive[i, j] = int.Parse(Console.ReadLine());

                }

            }

            return massive;
        }
        static void Change(int[,] massive)
        {
            for(int i=0;i<len2;i++)
            {
                int t = massive[1, i];
                massive[1, i] = massive[len - 2, i];
                 massive[len - 2, i]=t;
            }
            for (int i = 0; i < len; i++)
            {
                for (int j = 0; j < len2; j++)
                {
                    Console.Write(massive[i, j] + " ");
                }
            }
        }
        static void Main(string[] args)
        {
            int[,] massive = Input();
            Change(massive);


        }

    }
}