Compilare: main.cpp: In function 'void build_lps(std::string)': main.cpp:15:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(int j = 1; j < s.size(); ++j) | ~~^~~~~~~~~~ main.cpp: In function 'void kmp(std::string, int)': main.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(int i = 0; i < str.size(); ++i) | ~~^~~~~~~~~~~~ main.cpp:33:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | if(j == s.size()) | ~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:53:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(int i = 1;i <= str.size(); ++i) | ~~^~~~~~~~~~~~~ main.cpp:55:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for(int i = 0; i < str.size(); ++i) | ~~^~~~~~~~~~~~