Time Conversion

#!/bin/python3

import os
import sys

#
# Complete the timeConversion function below.
#
def timeConversion(s):
    #
    # Write your code here.
    #
    list1=['01','02','03','04','05','06','07','08','09','10','11','12']
    d={'01':'13','02':'14','03':'15','04':'16','05':'17','06':'18','07':'19','08':'20','09':'21','10':'22','11':'23','12':'12'}
    #print(list1)
    #print(d)
    
    if s[8:]== "AM" and s[0:2] != "12" :
        return(s[:8])
    elif s[8:]== "AM" and s[0:2] == "12" :
        return("00"+s[2:8])
    
    elif s[8:]== "PM":
        for i in range(0,12):
            if list1[i]== s[:2]:
                p=list1[i]
        return(d[p]+s[2:8])
if __name__ == '__main__':
    f = open(os.environ['OUTPUT_PATH'], 'w')

    s = input()

    result = timeConversion(s)

    f.write(result + '\n')

    f.close()