import java.util.*;

class Human{
	String name;
	int point;
	String hands;
}

public class pre {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
		Human a = new Human();
		a.name = s.next();
		a.point = s.nextInt();
		a.hands = s.next();
		Human b = new Human();
		b.name = s.next();
		b.point = s.nextInt();
		b.hands = s.next();
		
		if(a.point > b.point){
			System.out.println(a.name);
		}
		else if(a.point < b.point){
			System.out.println(b.name);
		}
		else{
			System.out.println("-1");
		}
    }
}