Compilare: main.cpp: In function 'int main()': main.cpp:8:19: warning: unused variable 'M' [-Wunused-variable] 8 | long long V,N,M,j,P,sc=0,sem=0,Mmax=0,niv=1,Nmax; | ^ In file included from /usr/include/c++/12.2.1/iostream:39, 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:25:13: /usr/include/c++/12.2.1/ostream:202:25: warning: 'Nmax' may be used uninitialized [-Wmaybe-uninitialized] 202 | { return _M_insert(__n); } | ~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:8:49: note: 'Nmax' was declared here 8 | long long V,N,M,j,P,sc=0,sem=0,Mmax=0,niv=1,Nmax; | ^~~~