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())
a=s//3600
b=(s%3600)//60
c=(a%3600)%60
print(str(a)+":"+str(b)+":"+str(c))


s=int(input())
a=s//3600
b=(s%3600)//60
c=(s%3600)%60
print(str(a)+":"+str(b)+":"+str(c))

