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 Ruby (judge verdict: Accepted)

class Main
  def self.run
    time = read_time
    watch = Watch.new(time)
    puts watch.description
  end

  private

  def self.read_time
    gets.to_i
  end
end

class Watch
  def initialize(time)
    @time = time
  end

  def description
    "#{hours}:#{minutes}:#{seconds}"
  end

  private

  def hours
    @time / 3600
  end

  def minutes
    @time % 3600 / 60
  end

  def seconds
    @time % 60
  end
end

Main.run