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: Accepted)

using System;

public class ITP1_1_D
{
    public static void Main(string[] args)
    {
        //var exStdIn = new System.IO.StreamReader( "input.txt" );
        //System.Console.SetIn( exStdIn );

        var a = int.Parse(Console.ReadLine());

        Solve(a);
    }

    private static void Solve(int a)
    {
        var h = a / 3600;
        var m = (a - h * 3600) / 60;
        var s = a - h * 3600 - m * 60;

        Console.WriteLine("{0:d}:{1:d}:{2:d}", h, m, s);
    }
}