Something

<?php

$input ='9
3 5 1 7 9 0 9 -3 10
0';

$lines = explode("\n", $input);
$array = array();
foreach ($lines as $line)
{
	$array = array_merge($array, array_map('intval', explode(' ', $line)));
}

sort($array);
var_dump(array_pop($array), array_pop($array), array_pop($array));
?>