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.util.Scanner;
public class Main {
    public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int sec = sc.nextInt();
    
    if(0 < sec && sec <= 86400) {
        int h = sec / 3600;
        int m = (sec - (3600 * h)) / 60;
        int s = sec - (h * 3600 + m * 60);
        System.out.println(h + ":" + m + ":" + s);
    }else {
        System.out.println("??£??????????????\?????????????????????");
    }
  }    
}