#include<bits/stdc++.h>
using namespace std;

int main(){
	cin.tie(0),ios::sync_with_stdio(false);
	string a,b,aa,bb; char g; cin>>a>>aa>>g>>b>>bb>>g;
	cout<<(aa.size()==bb.size()?a>b?a:b:aa.size()>bb.size()?a:b)<<"\n"s;
}