using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Camel_sBack
{
    class Program
    {
        static void Main(string[] args)
        {
            List<int> numbers = Console.ReadLine().Split(' ').Select(int.Parse).ToList();

            int basis = int.Parse(Console.ReadLine());

            if (numbers.Count == basis)
            {
                Console.WriteLine("already stable: " + string.Join(" ", numbers));
                return;
            }

            int count = 0;

            for (int i = 0; i < numbers.Count; i++)
            {
                if (numbers.Count == basis)
                {
                    break;
                }
                numbers.RemoveAt(i);
                numbers.Remove(numbers[numbers.Count - 1 - i]);
                count++;
                i = -1;
            }
            Console.WriteLine("{0} rounds", count);
            Console.WriteLine("remaining: " + string.Join(" ", numbers));
        }
    }
}