Zadacha

using System;

namespace ConsoleApp3
{
    class Program
    {
        static void Main(string[] args)
        {
            int[,] array = new int[4, 4];
            string s;
            for (int i = 0; i < 4; i++)
            {
                for (int j = 0; j < 4; j++)
                    array[i, j] = int.Parse(Console.ReadLine());
            }
            for (int i = 0; i < 4; i++)
            {
                //izvejdane na pregledna tablica
                s = "";
                for (int j = 0; j < 4; j++)
                {
                    s += String.Format("{0,5}", array[i, j]);

                }
                Console.WriteLine(s);
            }
            int[] a = new int[8];
            int k = 0;
            int min = 0, max = 0;
            for (int i = 0; i < 4; i++)
            {
                min = array[i, 0];
                max = array[i, 0];
                for (int j = 0; j < 4; j++)
                {
                    if (array[i, j] < min)
                        min = array[i, j];
                    if (array[i, j] > max)
                        max = array[i, j];
                }
                Console.WriteLine("min e " + min + " max e " + max);
                a[k] = min; a[k + 1] = max;
                k += 2;
            }
            for (int i = 0; i < 8; i++)
            {
                Console.Write(a[i] + " ");
            }
            Console.WriteLine();
        }
    }
}
/*
1
3
-11
12
-10
1
5
2
21
31
15
-15
0
3
6
7
9
-3

*/