Why some OJs don't update their compilers?

Revision en2, by Pluteum, 2022-05-12 16:49:56

Codeforces is one of the few platforms which support C++20. Some others are using C++17 like AtCoder and CodeChef. Topcoder and many classical OJ such as POJ is still using C++11 if I recall correctly. And for Java I haven't seen one that supports Java18.

So here's the question. I think update the compilers is rather a simple thing. Well, at least for my PC. Is there any technical issue on updating the compilers or will it cause some trouble?

Sorry, I don't have many knowledge on this, but it really confused me because it makes me to follow different standard when solving problems on different OJ...

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  Rev. Lang. By When Δ Comment
en3 English Pluteum 2022-05-14 06:19:33 30
en2 English Pluteum 2022-05-12 16:49:56 4 Tiny change: 'is one of few platf' -> 'is one of the few platf'
en1 English Pluteum 2022-05-12 16:49:32 650 Initial revision (published)