Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: so i was going into this exam well prepared and feeling really good about it. the exam was super easy, finished it and was feeling pretty good. then, i talked to one of my classmates and he mentioned that he had a much different answer for irr and asked if i added in the $500,000 initial purchase price.

fuck.

that question was worth 40% of the exam. the 2 questions after it were worth 15% of the exam and relied on the (wrong) answer i got in the first question. i needed an a on this exam to pull an a in the class. goodbye 4.0, looks like i'm only going to get a 3.75 this semester.

TIFU by entering the wrong amount for CF-0 and possibly failing finance my final costing me my 4.0 that I have had for the last 3 years of college.