Problem:
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Watch

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;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Watch
{
    class Program
    {
        static void Main(string[] args)
        {
            //入力
            var n = int.Parse(Console.ReadLine());  // ユーザーの入力した整数を読み込む

            int h = n/60/60;
            int m = n/60%60;
            int s = n%60%60;

            //計算結果を表示
            Console.WriteLine(h+":"+m+":"+s);
           
        }
    }
}