Chinese Mathematical Olympiad
The Chinese Mathematical Olympiad (CMO), also associated with China’s national mathematics winter camp, is one of the highest-level mathematics competitions for Chinese high-school students.
Its problems typically require substantial proof-writing and combine ideas from algebra, combinatorics, geometry, and number theory. Strong performance is an important step toward selection for China’s national olympiad training program.
This section collects CMO papers, personal solutions, alternative approaches, and notes about reusable techniques.
Papers added to the cmo directory appear below automatically.