Compilare: main.cpp: In function 'int main()': main.cpp:17:27: warning: unused variable 'sum' [-Wunused-variable] 17 | long long n, p, ii=0, sum=0; | ^~~ 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:54:13: /usr/include/c++/12.2.1/ostream:202:25: warning: 'sol' may be used uninitialized [-Wmaybe-uninitialized] 202 | { return _M_insert(__n); } | ~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:42:33: note: 'sol' was declared here 42 | long long st=1, dr=nr, mid, sol; | ^~~