The following are the major OJ platforms. Find the ones that suit you to achieve the effect of getting twice the result with half the effort.
1. Zhejiang University Online Judge (ZOJ)
link: http://acm.zju.edu.cn The
earliest and most famous OJ in China, there are many masters on it. The characteristic is that the data is relatively tricky, and there are often boundary data you can't think of, which can test the comprehensiveness of thinking.
2. The
link of Peking University Online Judge (POJ) : http://acm.pku.edu.cn/JudgeOnline/ was
established late, but the questions were added very quickly. Now the number of questions is about the same as ZOJ, and the feature is that online competitions are held There are more data, and the data is weaker than that on ZOJ. Sometimes the same question and the same program can be used on ZOJ for WA and POJ for AC.
3. Tongji University Online Judge (TOJ)
link: http://acm.tongji.edu.cn/index.php
This OJ cannot be compared with the previous two in terms of number of questions. The reason for recommending this OJ is that it is in Chinese. This is good news for many brothers who are not very familiar with English. It has also attracted many high school OIers. After all, their English is still a little worse, and the above topics are more biased towards high school informatics competitions.
4. Online Judge (UVA)
link of the University of Valladolid in Spain : http://acm.uva.es/ The
largest and most famous OJ in the world, with a huge number of topics and complex, data is also very tricky, the world’s top masters are on it . It is said that if you can get more than a thousand AC questions on UVA, just send your resume to IBM or Microsoft. You will never be disappointed.
5. Online Judge (URAL)
link of Ural University in Russia : http://acm.timus.ru/
is also a veteran OJ. There are not many questions, but the questions are classic. I used it when I was in high school. .
6. Russia Saratov State University (Saratov State University) (SGU)
link: http://acm.sgu.ru/
SGU is the training used by Saratov State University in Russia to train ACM players website. The establishment of this website was late, but with the competition and the addition of new questions, the question bank has become more abundant. A major feature of this question bank is the powerful function of Online Judge, which not only allows you to avoid the tedious operation of multiple data processing, but also tells you which data the program is wrong. Although this is somewhat different from ACM's Judge, it is convenient for debugging programs. Compared with UVA, the questions here are stricter in terms of time and space, and more of the players' mastery of the algorithm are investigated, so it is especially recommended that players who impact NOI also do it.
7. UsacoGate Online Judge (USACO)
link: http://ace.delos.com/usacogate
The training website of the United States Computer Olympiad (USACO), which is characterized by completing one level before continuing, which is different from the previous OJ It is the test data that can be seen, and the standard answer can be seen when you get it right, so if you can’t find the reason on the above OJ at the beginning, you can try to do it here and see the test data. Where did you yin from?
Reference: The data comes from the Internet.
If there are any errors or omissions, please leave a comment below to correct me!