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)


val = gets.to_i
ans = {
  hour: 0,
  minute: 0,
  second: 0
}

while true do
  if 3599 < val #????????? 60 * 60
    val -= 3600
    ans[:hour] += 1
  elsif 59 < val #??????
    val -= 60
    ans[:minute] += 1
  else
    ans[:second] = val
    break
  end
end

puts "#{ans[:hour]}:#{ans[:minute]}:#{ans[:second]}"