Time Until the Warning

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Time limit1sMemory limit128 MB

Summary

Given current time and a future warning time in a day, compute the wait time as a difference modulo 24 hours, printing 24:00:00 if they match.

Level: Easy2 of 10
Topics: Math, Implementation
Solved: No attempts yet

Problem

You are given the current time and the time when a warning will begin. Both times are times within a 24-hour day.

Compute how long you must wait until the warning begins. The waiting time is at least 1 second and at most 24 hours. Therefore, if the two times are the same, wait until the same time on the next day and output 24:00:00.

Input

The first line contains the current time in the format hh:mm:ss.

The second line contains the warning time in the same format.

hh is an integer from 0 to 23, and mm and ss are each integers from 0 to 59.

Output

Print the required waiting time in the format hh:mm:ss. If the required wait is 24 hours, print 24:00:00.

Examples2

Example 1
Input
```
20:00:00
04:00:00
```
Expected output
```
08:00:00
```
Example 2
Input
```
12:34:56
14:36:22
```
Expected output
```
02:01:26
```