PROGRAM TO CONVERT 12HOURS CLOCK TIME INTO 24HOURS CLOCK

 def timeConversion(s):

   if s[0:2] == "12" and s[-2:] == "AM":

        print("00"+s[2:8])

    elif s == "12:00:00AM":

        print("00:00:00")

    elif s[0:2] == "12" and s[7:9] == "PM":

        print(s[0:7])

    elif s[-2:] == "PM" and s[0:2] != "12":

        print(f"{int(s[:2])+12}{s[2:8]}")

    elif s[0:2] == "24":

        print("THIS TIME IS ALREADY AS 24 HOURS CLOCK")

    else:

        print(s[0:8])

    # convert 12 hours to 24 hours

    # Write your code here.

    #

if __name__ == '__main__':

    s = input()

    timeConversion(s)