Class Task 52#

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Fill1(int[,] arr)
        {
            int x = arr.GetLength(1) / 2;
            for (int i = 0; i <= arr.GetLength(0) / 2; i++)
            {
                arr[i, x] = 1;
                arr[i, arr.GetLength(1) - x - 1] = 1;
                arr[arr.GetLength(0) - i - 1, x] = 1;
                arr[arr.GetLength(0)-i-1,arr.GetLength(1)-x-1] = 1;
                x--;
            }
        }
        static void Fill2(int[,] arr)
        {
            int x = arr.GetLength(1) / 2 -1;
            for (int i = 0; i < arr.GetLength(0) / 2; i++)
            {
                arr[i, x] = 1;
                arr[i, arr.GetLength(1) - x - 1] = 1;
                arr[arr.GetLength(0) - i - 1, x] = 1;
                arr[arr.GetLength(0) - i - 1, arr.GetLength(1) - x - 1] = 1;
                x--;
            }
        }
        static void Main(string[] args)
        {
            int a = int.Parse(Console.ReadLine());
            int[,] arr = new int[a, a];
            if (a % 2 != 0)
                Fill1(arr);
            else
                Fill2(arr);
            for (int i = 0; i < arr.GetLength(0); i++)
            {
                for (int j = 0; j < arr.GetLength(1); j++)
                {
                    Console.Write(arr[i, j]);
                }
                Console.WriteLine();
            }
            Console.ReadKey();
        }
    }
}