In my first CS class, the professor announced an extra credit project due at the end of the semester. It was to create a formatted terminal calendar given a year from user input. I finished it after learning about condition but before I learned about classes... or functions... or loops... or searching the internet... partially. I searched how leap years worked, but didn't bother to search for code (Stack Overflow didn't exist yet)

Anyway, long ass program with each month hard-coded with 7 possible calendars for each month depending on the first day of the week. Lots of copy and paste. Professor was speechless, but accepted it.