Note: 

Welcome to CUMCM-2020.

The contest problems can be downloaded from the website http://en.mcm.edu.cn, staring from 18:00,  10 September, 2020. 
 
For University-level participants, please choose any one from Problems A, B or C. 

For College-level participants, please choose any one from Problems A, B, C, D or E.

The solution paper should be written in either Chinese or English. 

The contest ends at 20:00,  13 September, 2020 (Beijing Time).  

Your solution package should be uploaded through the website http://en.mcm.edu.cn, before 8:00,  14 September, 2020 (Beijing Time). 

If you have any inquires, please visit the website http://en.mcm.edu.cn, or contact with us via email address xiejx@tsinghua.edu.cn or zhangwb@bupt.edu.cn.

Enjoy£¡