Time Difference
Submissions: 370   Accuracy:

39.72%

  Difficulty: Easy
     

Given the start time and end time of a race in the format hh:mm:ss. You task is to print the time taken to complete the race.

Input :
The first line of input contains an integer T, denoting number of test case. Then T test cases follow. The first line of each test case contains string s, denoting the start time of the race. The second line of each test case contains a string e, denoting the end time of the race.

 

Output :
For each test case in a new line print the time taken to complete the race in the format hh:mm:ss.


Constraints :
1<=T<=100
0<=hh<=23
0<=mm<=59
0<=ss<=59
start time<=end time


Example:
Input :

2
13:50:45
14:55:50
12:00:00
24:00:00

Output:
01:05:05
12:00:00


 

** For More Input/Output Examples Use 'Expected Output' option **

Author: Sonesh Shukla


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