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.
S = int( input() )
h = S / 3600
m = S % 3600 / 60
s = S % 60
print(h, m, s, sep= ":" )
S = int(input())
h = S // 3600
m = S % 3600 // 60
s = S % 60
print(h, m, s, sep = ':')