欢迎光临信息学奥赛在线评测系统

  Problem Set is the place where you can find large amount of problems from different programming contests. Online Judge System allows you to test your solution for every problem.

  First of all, read carefully Frequently Asked Questions.
  Then, choose problem, solve it and submit it.

  If you want to publish your problems or setup your own online contest, just Contact Administrator.
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