Compilare: In file included from /usr/include/c++/12.2.1/vector:65, from /usr/include/c++/12.2.1/functional:62, from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/stdc++.h:71, from main.cpp:1: In member function 'constexpr std::vector<bool, _Alloc>::reference std::vector<bool, _Alloc>::operator[](size_type) [with _Alloc = std::allocator<bool>]', inlined from 'void Prim(int)' at main.cpp:60:17: /usr/include/c++/12.2.1/bits/stl_bvector.h:1036:23: warning: 'next' may be used uninitialized [-Wmaybe-uninitialized] 1036 | { return begin()[__n]; } | ~~~~~~~^ main.cpp: In function 'void Prim(int)': main.cpp:52:13: note: 'next' was declared here 52 | int next; | ^~~~