The entry prize in the United States is equivalent to the third prize. The literal translation of the entry is the entry success prize, but the translation in China is the third prize. The Mathematical Modeling Competition for American College Students, sponsored by the American Federation of Mathematics and Its Applications, is the highest-level mathematical modeling competition in the world and the most influential mathematical modeling competition in the world. The content of the competition involves many fields such as economy, management, environment, resources, ecology, medicine and safety. The competition requires 3 people (both undergraduate and graduate students can participate) to complete all the work from modeling, solving and verifying the specified problem to writing the paper within 4 days, which reflects the ability of the contestants to study problems and solutions and the spirit of teamwork.