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

namespace ABC138A
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = int.Parse(Console.ReadLine());
            string s = Console.ReadLine();

            if (a <= 3200)
                Console.WriteLine(s);

            else
                Console.WriteLine("red");

            Console.ReadKey();
        }
    }
}
