Please convert 24-h time format to 12-h time format .
Hint:
Note that 1200 belongs to p.m.
Namely, the output should be 00:00 p.m.
and 0000 belongs to a.m.
Namely, the output should be 00:00 a.m.
always a 4-digit integer
hour + ":" + minute + "whitespace" + "a.m." / "p.m."
(2-digit) (2-digit)
hour and minute numbers need to have 0 prepended if needded.
Note that there is no need to add "\n" at the end of output.