Compilare: main.cpp: In function 'std::vector<int> make_prefix(std::string)': main.cpp:17:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | while (i < pattern.length()) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:24:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | if (i >= pattern.length()) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<int> match(std::string&, std::string&)': main.cpp:54:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | while (i < text.length()) | ~~^~~~~~~~~~~~~~~ main.cpp:60:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | if (j >= pattern.length()) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:46:9: warning: unused variable 'n' [-Wunused-variable] 46 | int n = text.length(); | ^ main.cpp:47:9: warning: unused variable 'm' [-Wunused-variable] 47 | int m = pattern.length(); | ^