Codeforces and Polygon may be unavailable from May 23, 4:00 (UTC) to May 23, 8:00 (UTC) due to technical maintenance. ×

Specialist

chakred_namor

Roman Derkach, Kotel'va, Ukraine
1669 problems
solved for all time
120 problems
solved for the last year
10 problems
solved for the last month
14 days
in a row max.
4 days
in a row for the last year
3 days
in a row for the last month