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 Ruby (judge verdict: Accepted)

MODE = "stdio"
require 'matrix'

tmp = Array.new

class Integer
  def divisor_list2
    return [1] if self == 1
    (1..Math.sqrt(self).to_i).select do |i|
      self%i == 0
    end.map {|e| [e, self/e]}.flatten.uniq.sort
  end
end

if(defined? MODE)
  tmp = STDIN.read.split("\n")
else
  iotmp = "\
  46979
  ".split("\n")
  iotmp.each{|s|
    tmp << s.strip
  }
end


class Time
  def initialize(time)
    @time = time
  end
  def hour
    @time/3600
  end
  def min
    @time%3600/60
  end
  def sec
    @time%3600%60
  end
  def display
    print hour,":",min,":",sec,"\n"
  end
end




sec = tmp[0].to_i

tm = Time.new(sec)

tm.display