Welcome to HDU Online Judge System

Problem Set is the place where you can find large amount of problems from different programming contests.
First of all, read carefully Frequently Asked Questions.
Then, choose Problem, solve it and submit it. To submit your solution, please, use This Page.
If you want to publish your problems or setup your own online contest, just Contact Us.
If you have some questions, just discuss on our Forum!
We provide some softwares and documents, to download them, Just Click Here.

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