Southeast Mathematical Olympiad, referred to as Southeast Mathematical Olympiad for short, is a mathematical competition jointly organized by Fujian, Zhejiang and Jiangxi in the southeast of China. The contestants are senior one students, and both senior one and senior two students can participate in the 1 1. The participating teams mainly come from middle schools in Fujian, Zhejiang and Jiangxi provinces, as well as teams from Shanghai, Guangdong and Hong Kong. Generally speaking, each team consists of four senior one students.