Welcome to Online Judge

  • 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

  • HTTPS 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

How to use the OJ

Any problem please contact administrator: dataisland@sjtu.edu.cn