Welcome to Online Judge(Legacy)

~~We support submissions in Python 2 now, please give it a try!~~ Python support is broken.
Encrypted connection is supported now. If your ISP blocks you from submitting code, please try access via HTTPS first. Oct 2, 2016
connection is required on all pages now :-) Oct 30, 2016
C++ compilation arguments changed to: g++-7 %s.cpp -o %s -O2 -std=c++17 -Wall -static -DONLINE_JUDGE Oct 15, 2017
The judge service is closed. New OJ Jul 14, 2021

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