Compilare: main.cpp: In function 'node* fix_over_flow(node*, int)': main.cpp:140:19: warning: unused variable 'lol' [-Wunused-variable] 140 | node* lol=fix_over_flow(dad,nr); | ^~~ main.cpp:183:19: warning: unused variable 'lol' [-Wunused-variable] 183 | node* lol=fix_over_flow(dad,nr); | ^~~ In file included from /usr/include/c++/12.2.1/vector:64, from main.cpp:3: In member function 'constexpr std::vector<_Tp, _Alloc>::size_type std::vector<_Tp, _Alloc>::size() const [with _Tp = node*; _Alloc = std::allocator<node*>]', inlined from 'node* bring_down(node*, int)' at main.cpp:219:26: /usr/include/c++/12.2.1/bits/stl_vector.h:988:66: warning: 'min_nod' may be used uninitialized [-Wmaybe-uninitialized] 988 | { return size_type(this->_M_impl._M_finish - this->_M_impl._M_start); } | ~~~~~~~~~~~~~~^~~~~~~~ main.cpp: In function 'node* bring_down(node*, int)': main.cpp:224:11: note: 'min_nod' was declared here 224 | node* min_nod; | ^~~~~~~ In member function 'constexpr std::vector<_Tp, _Alloc>::size_type std::vector<_Tp, _Alloc>::size() const [with _Tp = node*; _Alloc = std::allocator<node*>]', inlined from 'void adjust(node*, int)' at main.cpp:240:26: /usr/include/c++/12.2.1/bits/stl_vector.h:988:66: warning: 'min_nod' may be used uninitialized [-Wmaybe-uninitialized] 988 | { return size_type(this->_M_impl._M_finish - this->_M_impl._M_start); } | ~~~~~~~~~~~~~~^~~~~~~~ main.cpp: In function 'void adjust(node*, int)': main.cpp:246:11: note: 'min_nod' was declared here 246 | node* min_nod; | ^~~~~~~