using System;

namespace newEx
{
    class Program
    {
        static void Main(string[] args)
        {
            //string[] l = Console.ReadLine().Split(' ');
            //int p = int.Parse(l[0]);
            //int q = int.Parse(l[1]);
            //int r = int.Parse(l[2]);

            string l = Console.ReadLine();
            int r = int.Parse(l);
            l = Console.ReadLine();

            Console.WriteLine(Solve(r,l));
        }

        static string Solve(int a, string s)//修正200630
        {
            if (a >= 3200)
            {
                Console.WriteLine(s);
                return s;　//修正200629
            }
            else
            //if (a < 3200)
            {
                Console.WriteLine("red");
                return "red";　//修正200629
                // return"red";　//修正200629
            }
        }
    }
}
