Programming challenge description:

Write a program that, given two clock times, prints out the absolute number of minutes between them.

Input:

Your program should read lines from standard input. Each line contains two wall clock times separated by a hyphen. Wall clock time is defined as hh:mm followed by AM' or 'PM', e.g. '09:05 AM'

Output:

Print to standard output the number of minutes between the two times from standard input. Print out each result on a new line.

Test 1

Test Input

10:00 AM - 11:00 AM

Expected Output

60

Test 2

Test Input

1:00 PM - 11:00 AM

Expected Output

1320