Of course. The National Mathematical Modeling Competition for College Students was founded in 1992 and held once a year. It has become the largest basic subject competition in domestic universities and the largest mathematical modeling competition in the world. Csdn can be entered during national mathematical modeling. CSDN is an IT community, whose full name is China Professional IT Community. Established in 1999. Its full name is China Software Developers Network, or CSDN for short. Its main function is to provide various services for software developers.