At half-past five in the afternoon, during the Math Olympiad training class, Albert had just finished explaining the last problem. So, he closed the textbook and said, "We've covered all topics. Does anyone have any questions? If not, you can all head back early today. Review what you need to, get a good night's rest, and don't let it affect your performance tomorrow. And one last thing, don't be late, and don't forget to bring your admission tickets."

After giving some additional instructions, Albert picked up his books and left.

The others started packing up their bags, while Lem came over and patted Madelyn on the shoulder. "Class is dismissed early. Want to hang out?"

"I'm not going. I have something to do later," she replied.

Lem said, "I've heard that excuse from you a hundred times. Is it because your parents are strict?"

Madelyn smiled faintly but didn't say anything.

Kennedy gave Lem a meaningful look. Lem seemed to suddenly remember something. He covered his mouth, real