import java.util.*;
import java.math.*;
public class Janken{
 public static void main(String[] args){
  Scanner scan = new Scanner(System.in);
  String s1 = scan.next();
  BigInteger p1 = new BigInteger(scan.next());
  String x1 = scan.next();

  String s2 = scan.next();
  BigInteger p2 = new BigInteger(scan.next());
  String x2 = scan.next();
  int d = -1;
  System.out.println((s1.compareTo(s2) > 0)?s1:(s1.compareTo(s2) == 0)?d:s2);
 }
}