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 P{
public static void Main()
{

            //????????????????????????
            int second = Int32.Parse(Console.ReadLine());

            //?????°??£?¨?
            int H;          //??????
            int M;          //???
            int S;          //?§?

            H = second / 3600;
            M = (second - (H * 3600)) / 60;
            S = second - (H * 3600 + M * 60);

            //??¨???
            Console.WriteLine(H + ":" + M + ":" + S);
}
}