Programming - Online Submission System (Online Judge)
Judge Zhejiang University Online (ZOJ)
http://acm.zju.edu.cn
the earliest and most famous of OJ, there are many experts do question above. Data comparison feature is tricky, there is often a boundary data you can not think, it can test a comprehensive thinking.
Judge Peking University Online (POJ)
http://acm.pku.edu.cn/JudgeOnline/
established late, but the problem was quickly added, a few questions now and ZOJ comparable, characterized held more online games, data weaker than on ZOJ, sometimes the same question the same procedure, in ZOJ on WA, on POJ able to AC.
Judge Tongji University Online (TOJ)
http://acm.tongji.edu.cn/index.php
on the OJ number of questions can not be compared with the previous two, OJ recommend this because it is in Chinese, which for many of English is not very cold brother is a good news. It also attracted a large number of high school OIer, after all, they are short of some of the English Oh, the above topics are also more interested in high school Informatics race number.
Spain Judge Valladolid University Online (UVA)
http://acm.uva.es/
the world's largest and most famous of OJ, and giant huge number of miscellaneous topics, the data is also very tricky, top players all over the world are in it. It is said that if you AC in the UVA one thousand more questions, just feel free to approach IBM, Microsoft, what's sending resumes it will never let you down.
Judge Russia's Ural State University Online (URAL)
http://acm.timus.ru/
is also a veteran of the OJ, not much problem, but the classic title question, I do question in it in high school.
Russia's Saratov State University (Saratov State University) (SGU)
http://acm.sgu.ru/
SGU is Russia's Saratov State University (Saratov State University) for the cultivation of ACM players training site. Built during this site later, but with the holding of the game and adding new topics, the subject of this exam has become more abundant. A major feature of this exam is Online Judge powerful, it not only allows you to avoid the tedious operation of multiple data processing, you can tell the program in the first few wrong data. Although this is the ACM Judge slightly different, but convenient for the debugger. Compared with UVA, the topic here in time and space requirements are more stringent, and more players to grasp the situation investigated algorithm, it is particularly recommended impact NOI players also do a do.
Online Judge UsacoGate (USACO)
http://ace.delos.com/usacogate
the National Computer Olympiad (USACO) training site, a feature is done in order to continue to do off down the previous OJ different test data can be We see, and you can see the standard answer after doing right, if so, when we started on those above OJ total WA but can not find the cause, you can try to do some here, take a look at test data from what is generally Yin yours.
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