using System;

​

public class Program

{

    public static void Main()

    {

        bool Q_state = true;

        bool R_state = false;

        bool S_state = false;

        bool isAccepted = false;

        string input = Console.ReadLine();

        foreach (char ch in input)

        {

            if (Q_state == true && ch == '0')

            {

                S_state = true;

                R_state = false;

                Q_state = false;

                isAccepted = true;

            }

            else if (Q_state == true && ch == '1')

            {

                R_state = true;

                Q_state = false;

                S_state = false;

                isAccepted = true;

            }

            else if (R_state == true && (ch == '0' || ch == '1'))

            {

                Q_state = true;

                R_state = false;

                S_state = false;

                isAccepted = false;

            }

            else if (S_state == true && (ch == '0' || ch == '1'))

            {

                Q_state = true;

                R_state = false;

                S_state = false;

                isAccepted = false;

            }

        }

​

        if (isAccepted == true)

        {

            Console.WriteLine("String Accepted!");

        }

        else

        {

            Console.WriteLine("String Rejected!");

        }

    }

}