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;
            String s = "pink";
            a = int.Parse(Console.ReadLine());
            
            if (a>=3200)
            {
                Console.WriteLine("pink");
            }
            else
                Console.WriteLine("red");
            Console.ReadKey();
        }
    }
}
