using System;

using System.Collections.Generic;

using System.Text.RegularExpressions;

using System.Linq;

​

public class Program

{   

    public static void Main()

    {

        List<string> leaderboardList = new List<string>();

        leaderboardList.Add("A,A,9");

        leaderboardList.Add("B,B,8");

        leaderboardList.Add("G,C,65");

        leaderboardList.Add("S,B,10");

        leaderboardList = leaderboardList.OrderByDescending(x =>Convert.ToInt32(Regex.Match(x, @"\d+").Value)).ToList();

        foreach (var item in leaderboardList)

        {

            Console.WriteLine(item);

        }

    }

}