7

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

namespace p07._Count_Numbers
{
    internal class Program
    {
        public static void Main(string[] args)
        {
            List<int> numbers = Console.ReadLine().Split(' ').Select(int.Parse).OrderBy(x=>x).ToList();
            int counter=1;
            Console.WriteLine(string.Join(" ",numbers));
            for (int i = 0; i <1000; i++)
            {
                if(numbers[i] == numbers[i+1])
                {
                    counter++;
                }
                else
                {
                    Console.WriteLine($"{numbers[i]} -> {counter}");
                    counter = 1;
                }

                if (i == numbers.Count)
                {
                    break;
                }




            }

        }
    }
}