using System;

using System.Linq;

using System.IO;

using System.Text;

using System.Collections;

using System.Collections.Generic;

​

public class Program

{

    public class Console2

    {

        private static List<string> inputStrings = new List<string>()

            {"9999 9999",

                "14",

                "54 77",

                "start",

                "DR"};

        private static int line = 0;

        public static string ReadLine()

        {

            return inputStrings[line++];

        }

        public static void Write(string s)

        {

            System.Console.Write(s);

        }

        public static void WriteLine(string s)

        {

            System.Console.WriteLine(s);

        }

​

        public static class Error

        {

            public static void Write(string s)

            {

                System.Console.Write(s);

            }

            public static void WriteLine(string s)

            {

                System.Console.WriteLine(s);

            }

        }

    }

​

​

    public static void Main()

    {

​

​

    }

​

​

}