#include <iostream>
#include <algorithm>
#include <functional>
#include <string>
#include <limits.h>
using namespace std;

int main(){
	string name[2];
	string score[2];
	string te[2];
	cin >> name[0] >> score[0] >> te[0];
	cin >> name[1] >> score[1] >> te[1];
	
	score[0] += (char)0;
	score[1] += (char)0;
	
	if(score[0] > score[1]){
		cout << name[0] << endl;
	}else if(score[0] < score[1]){
		cout << name[1] << endl;
	}else{
		cout << -1 << endl;
	}
	
	return 0;
}