using System;
using System.Collections.Generic;

namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
List<int> numbers = new List<int>();
//Reading the line containing comma seperated integers list
var line = Console.ReadLine();
//Splitting to get individual integers
var lineNumbers = line.Split(',');
foreach (var item in lineNumbers)
{
//Adding them to list as list supports Sort() function
numbers.Add(Convert.ToInt32(item));
}
//Sorting the list
numbers.Sort();
//Printing first number
Console.Write(numbers[0]);
numbers.RemoveAt(0);
//All further numbers we are printing preceded with comma
numbers.ForEach(i => Console.Write("," + i));
Console.ReadKey();
}
}
}