Hello Codeforces,
I got the following compilation error
Cannot compile file:
In file included from C:/Programs/msys2-mingw64-9/include/c++/9.2.0/pstl/parallel_backend.h:14,
from C:/Programs/msys2-mingw64-9/include/c++/9.2.0/pstl/algorithm_impl.h:25,
from C:/Programs/msys2-mingw64-9/include/c++/9.2.0/pstl/glue_execution_defs.h:52,
from C:/Programs/msys2-mingw64-9/include/c++/9.2.0/execution:32,
from program.cpp:2:
C:/Programs/msys2-mingw64-9/include/c++/9.2.0/pstl/parallel_backend_tbb.h:19:10: fatal error: tbb/blocked_range.h: No such file or directory
19 | #include <tbb/blocked_range.h>
when I added the include command #include <execution> to use the execution::par constant.
The program compiles successfully on my local computer. Am I missing something that can fix this compilation error?
Note that testing systems typically add up CPU time for all cores, so any parallelism will only make your program more likely to get a TL.
Thanks for the feedback. I was interested in comparing the performance of the program with and without the parallel_policy.