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Description
HDU is an online judge maintained by Hangzhou Dianzi University. It's home to many classic problems from the Chinese IOI scene.
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HDU FAQ
What is HDU?
HDU is an online judge maintained by Hangzhou Dianzi University. It's home to many classic problems from the Chinese IOI scene.
Do I need to download HDU?
No. HDU runs in your browser at acm.hdu.edu.cn, so there's nothing to install.
What are the best HDU alternatives?
Popular alternatives to HDU include Project Euler, AtCoder and CodeFights. See all HDU alternatives






