Sort Numbers

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

namespace P05_Sort_Numbers
{
    class Program
    {
        static void Main(string[] args)
        {
            List<double> listOfNumbers = Console.ReadLine()
                .Split()
                .Select(double.Parse)
                .ToList();

            listOfNumbers.Sort();
            Console.WriteLine(string.Join(" <= ", listOfNumbers));
        }
    }
}