Does the online judge have any compiler flags set?
This is the updated information regarding flags on the compilers set by online judge as of March 2024.
- C++ :
O2 - second optimization level,
lm - access to "math.h" library,
fomit-frame-pointer - disallow to store frame pointer in CPU register,
pthread - enable multithreading
- C :
O2 - second optimization level,
lm - access to "math.h" library,
fomit-frame-pointer - disallow to store frame pointer in CPU register,
pthread - enable multithreading
- Rust :
opt-level=2 - second optimization level
Runtime Flags
- Java :
Xss64m
- ** PyPy 3 :**
OO
Here is more complete answer - What are the compiler options that the judge uses? - faq - CodeChef Discuss
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You can check yourself, for example by throwing exception if not set If there is flag missing, please write an e-mail to bugs@codechef.com
I did check and it is ALSO being set for the IDE (which is not what we want).
Sent email to bugs. Thanks.
Also, we can use #ifdef
instead, right ?
Rust code is not being compiled with -O
as claimed, and this is slowing down Rust submissions dramatically, making Rust unusable for many problems.
See Bug report: Rust code is being compiled in debug mode without optimization for reproducible proof. I’ve gotten no response yet from my report to bugs@. (Edit: Actually I got a reasonably quick “we’ll look into this” response that landed in my spam folder, but that’s all so far.)