#include <iostream>
#include <math.h>
using namespace std;
#define P(x) (cout << x << endl)
int main(){
    string s1,s2,t;
    int p1,p2;
    cin>>s1>>p1>>t>>s2>>p2;
    if(p1>p2) P(s1);
    else if(p1<p2) P(s2);
    else P("-1");
}