C# advance, Multidimensional Arrays - Exercise, 2. Squares in Matrix

Ако може някой да ми помогне не мога да разбера защо не взимам 100/100.

using System;
using System.Linq;

namespace Tets21
{
internal class Program
{
static void Main(string[] args)
{
int[] num = Console.ReadLine().Split(' ', StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray();
int row = num[0];
int col = num[1];

char[,] symbols = new char[row, col];
for (int i = 0; i < symbols.GetLength(0); i++)
{
char[] sym = Console.ReadLine().Split(' ', StringSplitOptions.RemoveEmptyEntries).Select(char.Parse).ToArray();
for (int y = 0; y < symbols.GetLength(1); y++)
{
symbols[i, y] = sym[y];
}

}
int number = 0;
for (int i = 0; i < symbols.GetLength(0) - 1; i++)
{
for (int y = 0; y < symbols.GetLength(1) - 1; y++)
{
if (symbols[i, y] == symbols[i, y + 1] && symbols[i, y] == symbols[i + 1, i + 1] && symbols[i, y] == symbols[i + 1, y])
{
number++;
}
}
}
Console.WriteLine(number);
}
}
}

using System; using System.Linq; namespace squaresInMatrix { class Program { static void Main(string[] args) { int[] dimensions = ConsoleParseInt(); string[,] matrix = new string[dimensions[0], dimensions[1]]; for (int row = 0; row < matrix.GetLength(0); row++) { string[] currentRow = ConsoleParseString(); for (int col = 0; col < matrix.GetLength(1); col++) { matrix[row, col] = currentRow[col]; } } int counter = 0; for (int row = 0; row < matrix.GetLength(0) - 1; row++) { for (int col = 0; col < matrix.GetLength(1) - 1; col++) { if (matrix[row,col] == matrix[row, col +1] && matrix[row, col] == matrix[row + 1, col] && matrix[row + 1, col] == matrix[row +1 , col+ 1]) { counter++; } } } Console.WriteLine(counter); } static int[] ConsoleParseInt() => Console.ReadLine() .Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries) .Select(int.Parse) .ToArray(); static string[] ConsoleParseString() => Console.ReadLine().Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries); } }