Compilare: main.cpp: In function 'int main()': main.cpp:14:21: warning: unused variable 'y' [-Wunused-variable] 14 | long long x,y; | ^ In file included from /usr/include/c++/12.2.1/istream:39, from /usr/include/c++/12.2.1/fstream:38, from main.cpp:1: In member function 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>]', inlined from 'int main()' at main.cpp:28:20: /usr/include/c++/12.2.1/ostream:202:25: warning: 'pz' may be used uninitialized [-Wmaybe-uninitialized] 202 | { return _M_insert(__n); } | ~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:11:24: note: 'pz' was declared here 11 | long long n,mx=0,l,pz; | ^~ In member function 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>]', inlined from 'int main()' at main.cpp:28:29: /usr/include/c++/12.2.1/ostream:202:25: warning: 'l' may be used uninitialized [-Wmaybe-uninitialized] 202 | { return _M_insert(__n); } | ~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:11:22: note: 'l' was declared here 11 | long long n,mx=0,l,pz; | ^