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

namespace ABC_138A
{
    class Program
    {
        static void Main(string[] args)
        {
          
            int a;

            a = int.Parse(Console.ReadLine());

            if (a >= 3200)
                Console.WriteLine("pink");

          
          else  Console.WriteLine("red");

            Console.ReadKey();
        }
    }
}
