Compilare: main.cpp: In function 'int main()': main.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for ( int i = 0; i < s.length(); ++i ) { | ~~^~~~~~~~~~~~ main.cpp:43:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | if ( q+1 == patt.length() ) { | ~~~~^~~~~~~~~~~~~~~~ main.cpp:48:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for ( int i = 0; i < sol.size(); ++i ) { | ~~^~~~~~~~~~~~