import java.io.*;
import java.util.*;
import java.math.*;

class Main {
	
	public static void out (Object o) {
		System.out.println(o);
	}
	
	public static void main (String[] args) throws IOException {
		BufferedReader br = 
			new BufferedReader(new InputStreamReader(System.in));
		
		while (true) {
			String s = br.readLine();
			if (s.equals(args[0])) {
				out("locked");
				break;
			} else {
				out("unlocked");
			}
		}
	}
}