An election management program. Written by me when I was still in high school.
This program was written by me when I was in my 3rd/4th year of high school for faster student council elections. At the time, tallying the votes of ~100 students took a good chunk of the day. I felt I could make something to shorten that.
You could, but that doesn't mean you should :)
I'm putting the code here as an easy reminder for everyone about why OOP and good program design matters. Please don't actually use it in the real world.