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 JAVA (judge verdict: Wrong Answer)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) {
		 try {
		 BufferedReader buf = new BufferedReader(new InputStreamReader(System.in));
		
		 String ln;
		ln = buf.readLine();
		
//       String[] strAry = ln.split(" ");
//       int x = Integer.parseInt(strAry[0]);
//       int y = Integer.parseInt(strAry[1]);
		
       int z = Integer.parseInt(ln);
       int min = z/60;
       int hour = min/60;
       int sec = z - hour*3600 - min*60;
       
       System.out.println(hour + ":" + min + ":" +  sec + ":");
			} catch (IOException e) {
				// TODO ????????????????????? catch ????????????
				e.printStackTrace();
			}
    }
}