Compilare: In file included from /usr/include/c++/12.2.1/string:50, from /usr/include/c++/12.2.1/bits/locale_classes.h:40, from /usr/include/c++/12.2.1/bits/ios_base.h:41, from /usr/include/c++/12.2.1/ios:42, from /usr/include/c++/12.2.1/istream:38, from /usr/include/c++/12.2.1/fstream:38, from main.cpp:1: In function 'constexpr const _Tp& std::max(const _Tp&, const _Tp&) [with _Tp = int]', inlined from 'int main()' at main.cpp:41:15: /usr/include/c++/12.2.1/bits/stl_algobase.h:259:15: warning: iteration 256 invokes undefined behavior [-Waggressive-loop-optimizations] 259 | if (__a < __b) | ~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:40:18: note: within this loop 40 | for(int i=0;i<=(1<<(sz+1));i++) | ~^~~~~~~~~~~~~