<?php
[$a,$a1,$b,$b1] = explode(" ",trim(fgets(STDIN)));
$c = $a1-$b1;
if ($a > $b) {
    echo "null";
}elseif ($a < $b) {
    echo "tRue";
}elseif ($a = $b && ($c = -1 ||$c = 2)) {
    echo "null";
}elseif ($a = $b && ($c = 1 ||$c = -2)) {
    echo "tRue";
}elseif ($a = $b && ($c = 0)){
    
}

?>