8. heti házi

namespace PMPHF007_P99J7Y
{
    internal class PMPHF007_P99J7Y
    {
        static void Main(string[] args)
        {
            string s = Console.ReadLine();
            int[] b = new int[s.Length / 2];

            int index = 0;
            for (int i = 0; i < s.Length; i += 2)
            {
                string eleje = s.Substring(i, 2);
                int kettesszamok = int.Parse(eleje);
                b[index] = kettesszamok;
                index++;
            }

            Console.Clear();

            for (int i = 0; i < b.Length; i++)
            {
                if (b[i] >= 0 && b[i] <= 8)
                {
                    Console.Write(0);
                }

                else if (b[i] >= 27 && b[i] <= 50)
                {
                    Console.Write(1);
                }

                else { Console.Write('E'); }
            }

        }
    }
}