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/ostream:38, from /usr/include/c++/12.2.1/iostream:39, from main.cpp:1: In function 'constexpr _ForwardIterator std::__lower_bound(_ForwardIterator, _ForwardIterator, const _Tp&, _Compare) [with _ForwardIterator = int*; _Tp = int; _Compare = __gnu_cxx::__ops::_Iter_less_val]', inlined from 'constexpr _ForwardIterator std::lower_bound(_ForwardIterator, _ForwardIterator, const _Tp&) [with _ForwardIterator = int*; _Tp = int]' at /usr/include/c++/12.2.1/bits/stl_algobase.h:1498:32, inlined from 'void solve2(int, int)' at main.cpp:63:28: /usr/include/c++/12.2.1/bits/stl_algobase.h:1463:11: warning: 'sol' may be used uninitialized [-Wmaybe-uninitialized] 1463 | if (__comp(__middle, __val)) | ^~ main.cpp: In function 'void solve2(int, int)': main.cpp:33:40: note: 'sol' was declared here 33 | int l=-1000000000,r=1000000000,mid,sol; | ^~~