import java.util.Scanner;

public class Adventure2
{
	public static void main( String[] args )
	{
		Scanner keyboard = new Scanner(System.in);
		
		int nextroom = 1;
		String choice = "";

		while ( nextroom != 0 )
		{
			if ( nextroom == 1 )
			{
				System.out.println( "Room 1" );
				System.out.print( "> " );
				choice = keyboard.nextLine();
				if ( choice.equals("choice 1") )
					nextroom = 2;
				else if ( choice.equals("choice 2") )
					nextroom = 3;
				else
					System.out.println( "ERROR." );
			}
			if ( nextroom == 2 )
			{
				System.out.println( "Room 2" );
				System.out.print( "> " );
				choice = keyboard.nextLine();
				if ( choice.equals("choice 1") )
					nextroom = 1;
				else
					System.out.println( "ERROR." );
			}
		}

		System.out.println( "\nEND." );
	}
	
}