With a bit of fiddeling you can use every kind of bracket to basically make function calls in c++
Here are the links to the snippets, all compile and run
Rust: https://godbolt.org/z/bM3d7bG14
Omg I have the best idea but I'm not writing any C++ so someone else will have to do it.
Overload + to work as - in either some super rare condition or randomly with a very low chance
Ship it