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

deshaion

Ivan Avdonin, Toronto, Canada
Only public activity
372 problems
solved for all time
4 problems
solved for the last year
0 problems
solved for the last month
6 days
in a row max.
1 day
in a row for the last year
0 days
in a row for the last month