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50325 - How much time passed?

"Informatics Stars" Online Contests - 2011-2014

Start: Oct.20.2012 at 10:00:00 AM
Finish: Oct.20.2012 at 03:00:00 PM
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Contest problems

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Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Prepared by Ibrahim Mesecan.

How much time passed?

The boss Mr. Ervin Shehu is a very punctual man. That's why, he has decided to buy a new electronic card system which records the coming and leaving times of the staff. Mr. Shehu wants you to write a program to calculate the work time of the staff from their electronics card information.

Input specification
You will be given two time informations in a line separated by a space (time1 time2). Every time information contains three integers separated by two semicolons ':' (hh:mm:ss hh:mm:ss) where 0 ≤ hour ≤ 23, and 0 ≤ minute, second ≤ 59. And, it's guaranteed that time1 < time2.

Output specification
Give three integers (hours:minutes:seconds) separated by semicolons ':' which represent the time passed between the two given times.

 Sample Input I  
  8:30:26 12:48:54
 Sample Output I  
  4:18:28
 Sample Input II  
  18:12:15 22:23:54
 Sample Output II  
  4:11:39

Note: In MS. Excel, you can subtract a time from another as in the figure below.
  


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