Submission #3777503

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Source Code Expand

<?php
 
function input($func = null) {
    if ($func === null) {
        return trim(fgets(STDIN));
    } else {
        return $func(trim(fgets(STDIN)));
    }
}
function input_array($func = null) {
    if ($func === null) {
        return explode(' ', input());
    } else {
        return array_map(function($v) use ($func) {
            return $func($v);
        }, explode(' ', input()));
    }
}

input();
$ls = input_array('intval');
sort($ls);
echo array_sum(
    array_filter(
        $ls,
        function($k) {
            return $k % 2 === 0;
        },
        ARRAY_FILTER_USE_KEY
    )
) . "\n";

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