using System;

​

public class Program

{

    public static void Main()

    {

        //Find the length of the longest substring in the given string s that is the same in reverse.

        //As an example, if the input was “Ilikeracecarsthatgofast”, 

        //the substring (racecar) length would be 7.

        //If the length of the input string is 0, the return value must be 0.

        Console.WriteLine(GetLongestPalindrome("ilikeracecarsthatgofast") == 7);

        Console.WriteLine(GetLongestPalindrome("aab") == 2);

        Console.WriteLine(GetLongestPalindrome("abcde") == 1);

        Console.WriteLine(GetLongestPalindrome("zzbaabcd") == 4);

        Console.WriteLine(GetLongestPalindrome("") == 0);

    }

​

    public static int GetLongestPalindrome(string n)

    {

        //Code goes here.

        return 0;

    }

}