using System;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var input = Console.ReadLine().ToList();
        short operations = 0;
        bool isAvail = true;

        while (isAvail)
        {
            if (input.Count <= 1)
            {
                break;
            }
            for (int i = 0; i <= input.Count-2; i++)
            {
                if (input[i] == input[i + 1])
                {
                    isAvail = true;
                    input.RemoveAt(i);
                    input.RemoveAt(i);
                    operations++;
                    break;
                }
                else
                {
                    isAvail = false;
                }
            }
        }
        var result = String.Join("", input);
        if (result == "")
            Console.WriteLine("Empty String");
        else
            Console.WriteLine(result);
        Console.WriteLine($"{operations} operations");
    }
}