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: Accepted)

<?php
$l=(int)trim(fgets(STDIN));

#$s=$l%60;$l-=$s;$l/=60;$m=$l%60;$l-=$m;$l/=60;

$h=floor($l/3600);
$m=floor($l%3600/60);
$s=$l%60;

echo $h.':'.$m.':'.$s."\n";
#echo "{$h}:{$m}:{$s}\n";