The task of writing code in mathematical modeling competition usually involves data processing, algorithm implementation and model verification, and the front-end and back-end development overlap. But generally speaking, writing code in mathematical modeling contest is more inclined to back-end development.

The back-end development is mainly responsible for processing data, realizing algorithm logic, interacting with database and other tasks, supporting front-end display and user operation. In the contest of mathematical modeling, the purpose of writing code is often to realize the calculation, analysis, data processing and algorithm realization of mathematical model, so it is more in line with the category of back-end development.

However, the coding in mathematical modeling competition may involve some simple front-end display, such as drawing charts or presenting calculation results, so there will be some front-end development needs. Therefore, it can be said that the code writing in the mathematical modeling competition includes both the back-end development tasks and some front-end development requirements.