using System;
  class Program
    {
        static void Main(string[] args)
        {
            int a = int.Parse(Console.ReadLine());
            string s = Console.ReadLine();
            //int a = int.Parse(vals[0]);
            //string s = vals[1];

            if (a => 3200)
            {
                Console.WriteLine(s);
            }
            else
            {
                Console.WriteLine("red");
            }
        }
    }