This is really smart, had no idea or could be used this way.

It doesn't work for me due to 12s timeout.

simple

👌🏻

I typed same code, regards!

and i thought my solution was clean...

craziest :O

Learned.

• является оператором умножения, и он автоматически применяется ко всем элементам массива при использовании reduce

hi,
tried it on godbolt,
the resulting assembly-code will be the same,
so there's no real difference.
From my point of view it's just a habit to mark
any cast with the available keywords..
even in katas, it just grew into my muscle memory.

Source of the habit might be this: "https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines" (chapter ES.49) some but not all went in our companies codestyle-guide, so i'm just used to it.

What is the difference between this and return i?

good

Is it actually BP to write this outside of the class declaration?