Ages

using System;

namespace Age
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            string line = Console.ReadLine();
            int age = Int32.Parse(line);

            if (age < 3)
                Console.WriteLine("baby");
            else if(age < 14)
                Console.WriteLine("child");
            else if(age < 20)
                Console.WriteLine("teenager");
            else if(age < 66)
                Console.WriteLine("adult");
            else
                Console.WriteLine("elder");
        }
    }
}