<?php

$input1 = trim(fgets(STDIN));

list($player1,$player1Point,$player1hand) = explode(" ", $input1);

$input2 = trim(fgets(STDIN));

list($player2,$player2Point,$player2hand) = explode(" ", $input2);

if($player1Point > $player2Point){
    echo $player1."\n";
}else if($player1Point < $player2Point){
    echo $player2."\n";
}else{
    echo "-1"."\n";
}