<?php
 
function generateHistogram($scores) {
    $histogram = array_fill(0, 10, 0);
    foreach ($scores as $score) {
        if ($score >= 0 && $score <= 100) {
            $index = ($score == 100) ? 9 : floor($score / 10);
            $histogram[$index]++;
        }
    }
    return $histogram;
}
 
$input = trim(fgets(STDIN));
$scores = array_map('intval', explode(' ', $input));
$histogram = generateHistogram($scores);
 
for ($i = 0; $i < count($histogram); $i++) {
    $startRange = $i * 10;
    $endRange = ($i == 9) ? 100 : $startRange + 9;
    echo "$startRange-$endRange: " . $histogram[$i] . "\n";
}
 
?>

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