The senior gave me some advice on how to play toilet paper in Henan college entrance examination. How much do you want to use or if there is a limit?
One is enough. If it's not enough, you can have another one. I didn't have enough papers in the exam (too many calculus papers), so I raised my hand and asked the teacher for another one. It is possible, but both papers should be handed in when handing in, and neither can be damaged.