#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];
	
	if(score[0].length() > score[1].length()){
		cout << name[0] << endl;
	}else if(score[0].length() < score[1].length()){
		cout << name[1] << endl;
	}else{
		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;
}