Compilare: main.cpp: In function 'void insert(std::string)': main.cpp:21:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (int i = 0; i < s.size(); i++) { | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:67:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | while (i < aux.size()) { | ~~^~~~~~~~~~~~ main.cpp:80:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | for (int i = lol.size() + 1; i < aux.size(); i++) { | ~~^~~~~~~~~~~~ main.cpp:81:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | if (kmp[i] == lol.size()) | ~~~~~~~^~~~~~~~~~~~~