I took a combinatorics class that was hellish. Over half the class dropped out, including all of the graduate students after two weeks and almost all of the hon

I took a combinatorics class that was hellish. Over half the class dropped out, including all of the graduate students after two weeks and almost all of the honour students almost immediately. I ended up looking at our library catalog to look for a book that might help with the class. I noticed our professor had a book out that was a collection of Erdos papers. I signed out the second copy. After that I was getting high 90s while the rest of the class was getting barely 50s. The marks had to be scaled, it was the teacher's intention not to fail us but to see how far he could push it. It was brutal.