Compilare: main.cpp: In function 'int main()': main.cpp:94:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 94 | for (int i = 0; i < adj_rev[nod_curent].size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:84:29: warning: 'berarie' may be used uninitialized [-Wmaybe-uninitialized] 84 | if (!vizitat[berarie]) { | ~~~~~~~~~~~~~~~^ main.cpp:82:13: note: 'berarie' was declared here 82 | int berarie; | ^~~~~~~ In file included from /usr/include/c++/12.2.1/vector:64, from main.cpp:2: In member function 'constexpr void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = int; _Alloc = std::allocator<int>]', inlined from 'int main()' at main.cpp:75:29: /usr/include/c++/12.2.1/bits/stl_vector.h:1283:13: warning: 'v' may be used uninitialized [-Wmaybe-uninitialized] 1283 | ++this->_M_impl._M_finish; | ^~ main.cpp: In function 'int main()': main.cpp:73:16: note: 'v' was declared here 73 | int u, v; | ^ In file included from /usr/include/c++/12.2.1/bits/stl_iterator.h:85, from /usr/include/c++/12.2.1/bits/stl_algobase.h:67, from /usr/include/c++/12.2.1/vector:60: In function 'constexpr decltype (::new(void*(0)) _Tp) std::construct_at(_Tp*, _Args&& ...) [with _Tp = int; _Args = {const int&}]', inlined from 'static constexpr void std::allocator_traits<std::allocator<_Up> >::construct(allocator_type&, _Up*, _Args&& ...) [with _Up = int; _Args = {const int&}; _Tp = int]' at /usr/include/c++/12.2.1/bits/alloc_traits.h:518:21, inlined from 'constexpr void std::vector<_Tp, _Alloc>::_M_realloc_insert(iterator, _Args&& ...) [with _Args = {const int&}; _Tp = int; _Alloc = std::allocator<int>]' at /usr/include/c++/12.2.1/bits/vector.tcc:462:28, inlined from 'constexpr void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = int; _Alloc = std::allocator<int>]' at /usr/include/c++/12.2.1/bits/stl_vector.h:1287:21, inlined from 'int main()' at main.cpp:75:29: /usr/include/c++/12.2.1/bits/stl_construct.h:97:14: warning: 'u' may be used uninitialized [-Wmaybe-uninitialized] 97 | { return ::new((void*)__location) _Tp(std::forward<_Args>(__args)...); } | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:73:13: note: 'u' was declared here 73 | int u, v; | ^