package main

import (
	"fmt"
)
type Data struct {
	Name  string
	Point string
	X     string
}
func scan() *Data {
	c := Data{}
	fmt.Scanf("%s %s %s", &c.Name, &c.Point, &c.X)
	return &c
}
func (a *Data)sort(b *Data) *Data {
	if len(a.Point) < len(b.Point) {
		return b
	}
	if len(a.Point) > len(b.Point) {
		return a
	}

	if a.Point < b.Point {
		return b
	}
	if a.Point > b.Point {
		return a
	}
	return nil
}

func main() {
	A := scan()
	B := scan()
	ans := A.sort(B)
	if ans != nil {
		fmt.Println(ans.Name)
	}else {
		fmt.Println(-1)
	}
}