import java.util.*;

class Question304
{
	public static void main(String[] str)
	{
	
		Scanner scan = new Scanner(System.in);
		
		int code = scan.nextInt();
		
		while(true){
			int input = scan.nextInt();
			
			if(input == code){
				System.out.println("unlocked");	break;
			}
			else{
				System.out.println("locked");
			}
			
		}
		
	}
}