$v1 = <>;
$v1 =~ /(\d+)\.(\d+)\.(\d+)/;
$a1 = $1; $b1 = $2; $c1 = $3;
$v2 = <>;
$v2 =~ /(\d+)\.(\d+)\.(\d+)/;
$a2 = $1; $b2 = $2; $c2 = $3;
if($a2 < $a1
    || ($a2 == $a1 && $b2 < $b1)
    || ($a2 == $a1 && $b2 == $b1 && $c2 <= $c1)){
    print "YES\n";
}else{
    print "NO\n";
}