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)

a = STDIN.gets()
a = a.to_i()
h = a/3600 
m = (a - h*3600)/60
s = a - h*3600 - m*60

print h.to_s() + ":" + m.to_s() + ":" + s.to_s() + "\n"