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Expert

BYR_KKK

Yunrui ed7TRlQPFM0Yqmdrepgl, Yantai, China
299 problems
solved for all time
265 problems
solved for the last year
48 problems
solved for the last month
8 days
in a row max.
8 days
in a row for the last year
3 days
in a row for the last month