Submission #6984651

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Source Code Expand

<?php
fscanf(STDIN, '%d', $n);
$a = array_map('intval', explode(' ', trim(fgets(STDIN))));

$ans = 0;
for($i = 0; $i < $n; $i++) {
    $ans += 1 / $a[$i];
}
$ans = 1 / $ans;
echo $ans . PHP_EOL;

Submission Info

Test Cases