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

namespace Task1010
{
    class Program
    {
        static void Main(string[] args)
        {
        }
        static void PrintArray(int[,] 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();
            }
        }
        static int[,] CreateArray()
        {
            int[,] arr = new int[15, 20];
            for (int i = 0; i < arr.GetLength(0); i++)
            {
                for (int j = 0; j < arr.GetLength(1); j++)
                {
                    arr[i, j] = i;
                }
            }
            return arr;
        }
        static int[,] Kefel()
        {
            int[,] arr = new int[10, 10];
            for (int i = 0; i < arr.GetLength(0); i++)
            {
                for (int j = 0; j < arr.GetLength(1); j++)
                {
                    arr[i, j] = (i + 1) * (j + 1);
                }
            }
            return arr;
        }
        static int[,] CreateRandom(int r, int c)
        {
            Random rand = new Random();
            int[,] arr = new int[r, c];
            for (int i = 0; i < arr.GetLength(0); i++)
            {
                for (int j = 0; j < arr.GetLength(1); j++)
                {
                    arr[i, j] = rand.Next(0,10);
                }
            }
            return arr;
        }
        static void FindMax(int[,] arr)
        {
            int max = 0;
            string maxim = "";
            for (int i = 0; i < arr.GetLength(0); i++)
            {
                for (int j = 0; j < arr.GetLength(1); j++)
                {
                    if (arr[i, j] > max)
                    {
                        max = arr[i, j];
                    }
                }
            }
            for (int i = 0; i < arr.GetLength(0); i++)
            {
                for (int j = 0; j < arr.GetLength(1); j++)
                {
                    if (arr[i, j] == max)
                    {
                        maxim += i.ToString() + "," + j.ToString() + " ";
                    }
                }
            }
            Console.WriteLine("The max number was: " + max);
            Console.WriteLine("It appeared in: " + maxim);
        }
        static void Diagnol(int[,] arr)
        {
            if (arr.GetLength(0) != 6 || arr.GetLength(1) != 6)
            {
                Console.WriteLine("There was a problem with the array that was put in");
                return;
            }
            PrintArray(arr);
            Console.WriteLine();
            for (int i = 0; i < arr.GetLength(0); i++)
            {
                for (int j = 0; j < arr.GetLength(1); j++)
                {
                    if (i == j)
                        arr[i, j] = 1;
                    if (j < i)
                        arr[i, j] = 0;
                }
            }
        }
        static void Inner(int[,] arr)
        {
            int[,] arr2 = new int[5, 5];
            if(arr.GetLength(0) != 7 || arr.GetLength(1) != 7)
            {
                Console.WriteLine("There was a problem with the array");
                return;
            }
            PrintArray(arr);
            Console.WriteLine();
            for (int i = 0; i < arr2.GetLength(0); i++)
            {
                for (int j = 0; j < arr2.GetLength(1); j++)
                {
                    arr2[i, j] = arr[i, j];
                }
            }
            PrintArray(arr2);
        }
        static bool IsPositive()
        {

            int summain = 0;
            int sumsec = 0;
            int[,] arr = CreateRandom(7, 7);
            PrintArray(arr);
            Console.WriteLine();
            for (int i = 0; i < arr.GetLength(0); i++)
            {
                summain += arr[i, i];
            }
            for (int i = 0; i < arr.GetLength(0); i++)
            {
                sumsec += arr[i, arr.GetLength(0) - 1 - i];
            }
            if (summain > sumsec)
                return true;
            return false;
        }
        static bool IsMagic(int n,int[,] arr)
        {
            int sumAlahson1=0;
            int sumAlahson2=0;
            for(int i=0;i<n;i++){
                sumAlahson1+=arr[i,i];
                sumAlahson2+=arr[arr.Length-i,arr.Length-i];
            }
            if(sumAlahson1!=sumAlahson2)
                return false;
            for(int i=0;i<n;i++){
                int sumRow=0,sumColumn=0;
                for(int j=0;j<n;j++){
                    sumRow+=arr[i,j];
                    sumColumn+=arr[j,i];
                }
                if(sumRow!=sumAlahson1||sumColumn!=sumAlahson2)
                    return false;
            }
            return true;
        }
    }
}