using System;


namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            int r = 0;
            int b = 0;
            string[] str = new string[3];
            str[0]= Console.ReadLine();
            str[1] = Console.ReadLine();
            str[2] = Console.ReadLine();
            for (int n = 0; n == 2; n++)
            {
                if(str[n] == "RED") { r += 1; }
                else { b += 0; }
            }
            if(r>b) { Console.WriteLine("RED"); }
            else { Console.WriteLine("BLUE"); }
            Console.Read();
        }
    }
}