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 C# (judge verdict: Wrong Answer)

using System;


namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = int.Parse(Console.ReadLine());
            int h = a - (a % 3600);
            int s = a - h * 3600 - ((a - h * 3600) % 60);
            int m = (a - s - h * 3600) / 60;
Console.WriteLine(h+":"+m+":"+s);
        }
    }
}