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)

input = gets.to_i

def hhmmss(i)
  hh = (i/60/60).to_i
  mm = (i-hh*60*60)/60.to_i
  ss = (i-(hh*60*60+mm*60)).to_i
  puts "#{hh}:#{mm}:#{ss}"
end

if 0 <= input && input < 86400 
  hhmmss(input)
else
  return false
end