Compilare: In file included from /usr/include/c++/12.2.1/vector:70, 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<_Tp, _Alloc>::reference std::vector<_Tp, _Alloc>::emplace_back(_Args&& ...) [with _Args = {std::pair<int, int>}; _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >]', inlined from 'constexpr void std::vector<_Tp, _Alloc>::push_back(value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >]' at /usr/include/c++/12.2.1/bits/stl_vector.h:1294:21, inlined from 'void CB_a(int, int)' at main.cpp:41:19: /usr/include/c++/12.2.1/bits/vector.tcc:119:13: warning: 'p' may be used uninitialized [-Wmaybe-uninitialized] 119 | ++this->_M_impl._M_finish; | ^~ main.cpp: In function 'void CB_a(int, int)': main.cpp:29:22: note: 'p' was declared here 29 | int st, dr, mij, p; | ^ In member function 'constexpr std::vector<_Tp, _Alloc>::reference std::vector<_Tp, _Alloc>::emplace_back(_Args&& ...) [with _Args = {std::pair<int, int>}; _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >]', inlined from 'constexpr void std::vector<_Tp, _Alloc>::push_back(value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >]' at /usr/include/c++/12.2.1/bits/stl_vector.h:1294:21, inlined from 'void CB_b(int, int)' at main.cpp:70:19: /usr/include/c++/12.2.1/bits/vector.tcc:119:13: warning: 'p' may be used uninitialized [-Wmaybe-uninitialized] 119 | ++this->_M_impl._M_finish; | ^~ main.cpp: In function 'void CB_b(int, int)': main.cpp:58:22: note: 'p' was declared here 58 | int st, dr, mij, p; | ^