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;
class ITP1_1
{
    static void Main(string[] args)
    {
        //var exStdIn = new System.IO.StreamReader("stdin.txt");
        //System.Console.SetIn(exStdIn);

        //int[] a = Array.ConvertAll(Console.ReadLine().Split(' '), new Converter<String, int>(s => int.Parse(s)));

        int input = int.Parse(Console.ReadLine());

        int h = input / 3600;
        int m = input % 3600 / 60;
        int s = input % 3600 % 60;

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