Sacred Haven of Debauchery

Today, there was an exam where we had to solve problems, and before that, we had to submit a control work with a problem. I submitted the control work, but without the problem; they returned it to me later and wrote that I needed to do the problem. I looked at my problem, but there was only one parameter, and I didn't know where to get the others. So, I came earlier today and waited for someone to arrive. A girl came, I asked her about it, looked at the formulas, and then copied her problem.
Well, since I couldn't do my own, I copied someone else's, thinking it was a similar version. So, I copied it and waited for the exam.
The exam started, and everyone was given sheets with problems (4 of them). I solved the first problem myself. I looked at the second problem, and it was similar to the one I copied from the girl. I thought that maybe I could do it based on that example, but when I opened the control work with that problem, I saw that they were identical! This was a huge stroke of luck, and I simply copied that problem onto the sheet. Now I had solved two problems! I didn't know how to do the other two, but I looked at the third one from the girl who was sitting in front of me. The numbers were different, but the essence was the same, and I copied that one action (although she had two, I think). Okay, I did half of the third problem and started looking at the fourth. I found it with the girl who was sitting behind me. Yes, we had the same problems (it seems like only the fourth one, I don't know about the others). I looked at how she started solving it and copied one action, then wrote the second one myself.