Compilare: main.cpp: In function 'void build_lps(std::string)': main.cpp:14:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int j = 1; j < s.size(); ++j) | ~~^~~~~~~~~~ main.cpp: In function 'void kmp(std::string)': main.cpp:26:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i = 0; i < str.size(); ++i) | ~~^~~~~~~~~~~~ main.cpp:32:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | if(j == s.size()) | ~~^~~~~~~~~~~