Problem:
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Write a program which reads an integer $S$ [second] and converts it to $h:m:s$ where $h$, $m$, $s$ denote hours, minutes (less than 60) and seconds (less than 60) respectively.

Input

An integer $S$ is given in a line.

Output

Print $h$, $m$ and $s$ separated by ':'. You do not need to put '0' for a value, which consists of a digit.

Constraints

$0 \leq S \leq 86400$

Sample Input 1

46979

Sample Output 1

13:2:59

Solution in PHP (judge verdict: Wrong Answer)

<?php
$seconds = trim(fgets(STDIN));
$time = s2h($seconds); // time??? 50:57:38
echo $time;
 
function s2h($seconds) {
	
	$hours = floor($seconds / 3600);
	$minutes = floor(($seconds / 60) % 60);
	$seconds = $seconds % 60;
	
	$hms = sprintf("%02d:%02d:%02d", $hours, $minutes, $seconds);
	
	return $hms;
	
}
?>