Compilare: main.cpp: In function 'void solve(std::string, std::string)': main.cpp:28:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | if(Z[i]>=pattern.length()) | ~~~~^~~~~~~~~~~~~~~~~~