Compilare: main.cpp: In function 'void solve_task1()': main.cpp:30:27: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare] 30 | if (curent.size() == k) | ~~~~~~~~~~~~~~^~~~ main.cpp:27:9: warning: unused variable 'lung' [-Wunused-variable] 27 | int lung = 0; | ^~~~ main.cpp: In function 'long long int modifica(long long int&)': main.cpp:38:1: warning: no return statement in function returning non-void [-Wreturn-type] 38 | } | ^