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

$input = trim(fgets(STDIN),"\r\n");

$hour = floor($input/3600);
if($hour < 0) $hour = 0;
$minute = floor(($input%3600)/60);
if($minute < 0) $minute = 0;
$second = ($input%3600)%60;

echo $hour.':'.$minute.':'.$second."\n";