#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <functional>
#include <set>
#include <sstream>
#include <map>
#include <queue>
#include <stack>

using namespace std;


int main()
{
	string name1,name2,score1,score2,dummy1,dummy2;
	cin>>name1>>score1>>dummy1>>name2>>score2>>dummy2;
	
	string win="-1";
	if(score1.size()>score2.size()) win=name1;
	else if(score1.size()<score2.size()) win=name2;
	else{
		for(int i=0;i<score1.size();i++){
			if(score1[i]>score2[i]){win=name1; break;}
			else if(score1[i]<score2[i]){win=name2; break;}
		}
	}
	cout<<win<<endl;

	return 0;
}