Please read the new rule regarding the restriction on the use of AI tools. It applies starting from round 972. ×

Pupil

xu12345

zehou Xu, Beijing, China
From BJEA
116 problems
solved for all time
96 problems
solved for the last year
8 problems
solved for the last month
8 days
in a row max.
3 days
in a row for the last year
2 days
in a row for the last month