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 n;
            n = Console.ReadLine();
            if (a < 3200)
                Console.WriteLine(n);
            else
                Console.WriteLine("red");
            Console.ReadKey();

            
        }
    }
}
