h2. What does it mean?

$C++$ users can now use a bunch of cool features, some of which are described below briefly. Keep in mind that these features are *not* yet available at OJI, ONI, etc., so don't use them at any of these competitions unless they are allowed explicitly by the regulations.

$C++$ users can now use a bunch of cool features, some of which are described below briefly. Keep in mind that these features are *not* yet available at OJI, ONI, etc., so only use them at home.

h3. auto

auto c = vector<int>(10);
==

$auto$ can also be used with $const auto$ or $const auto&$ and it works the same way other types would work. In most cases, $auto$ cannot be used in function signatures.
 

h3.