import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		String t = sc.next();
		sc.close();

		List<String> list = new ArrayList<>();
		list.add("watermelon");
		list.add("beachball");
		list.add("shrinebell");
		list.remove(s);
		list.remove(t);

		System.out.println(list.get(0));
	}
}