I use LINQ to sort this sequence, it works pretty well on all tests i found.
Any ideas why it works wrong on test 4?



using System;
using System.Linq;

namespace Таблица_результатов
{
    class Program
    {

        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            string[] lines = new string[n];
            for (int i = 0; i < n; i++) { lines[i] = Console.ReadLine(); }

            var a = lines
                 .Select(x => x.Split())
                 .ToArray()
                 .OrderByDescending(x => x[1]);


            foreach (var x in a)
            {
                Console.WriteLine(x[0] + " " + x[1]);
            }
        }
    }
}