Compilare: main.cpp: In function 'int main()': main.cpp:15:21: 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 i = 2; i <= b.size(); i++) { | ~~^~~~~~~~~~~ main.cpp:26:21: 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 = 1; i <= b.size(); i++) { | ~~^~~~~~~~~~~ main.cpp:27:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | if (kmp[i] == a.size()) { | ~~~~~~~^~~~~~~~~~~