// Массивы с элементами инфоблоков
$elkoArr = $elems["ELKO"];
$treolanArr = $elems["Treolan"];
$ocsArr = $elems["OCS"];

foreach ($elkoArr as $elkoItem) {
    $i=0;
    do
    if($elkoItem['PROPERTY_22_VALUE'] !== $ocsArr[$i]['PROPERTY_31_VALUE'])
        $countElko++;
    while(++$i<count($ocsArr));
}

foreach ($treolanArr as $treolanItem) {
    $k=0;
    do
    if($treolanItem['PROPERTY_3_VALUE'] !== $ocsArr[$k]['PROPERTY_31_VALUE'])
        $countTreolan++;
    while(++$k<count($ocsArr));
}

echo $countElko."\n";
echo $countTreolan."\n";