Welcome to HDU Online Judge System

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To see HDOJ Problem Index by Source,Just Click here
To see HDOJ Problem Index by Type,Just Click here
To see HDU ACM/ICPC Teams Honors, Just Click Here
To see some HDU-TEAM's photos, Just Click Here.
We provide some softwares and documents, to download them, Just Click Here.
If you want to publish your problems or setup your own online contest, just Contact Us.