CPC 1.1 - Software for hacking IT practice

Description :
- For the judging practice of informatics in a fair way, it is imperative that we change the name of the student's test to another name (Rename the file name of the student to the beat) so that the examiner cannot guess which student's exam is on.

Manual beat:

* Rename the file Number to another number (Beat)
* So there are 100 exam rooms and each exam room has 24 students, it needs to be renamed 100x24 = 2400 tests (meaning Rename 2400 times) it takes 7 days
* Then we will assemble the beat (ie find the number and return the race)
* The renaming of the renaming file to another number (Beat) is very fast
* So there are 100 exam rooms and each exam room has 24 students, it takes 5 minutes
* The software will export the Excel file with the number and the number
* Correction only takes 5 minutes to use the function in excel.