You can answer the latter.

I was a freshman two years ago. I can't remember the registration fee clearly. I didn't get 100.

The content is 25 multiple-choice questions, including algebra, geometry, combination, trigonometry and number theory. But there won't be any difficult questions in China Mathematics League, and many questions are wrong. It seems that there were still many difficulties in the arrangement and combination at that time. Generally, those who have studied some middle school competitions will have no problems, and occasionally they will not do problems.