Compilare: main.cpp: In function 'void calc_kmp(std::string, std::string)': main.cpp:16:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int i = 2; i <= s.size(); i++){ | ~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i = 0; i < b.size(); i++){ | ~~^~~~~~~~~~ main.cpp:33:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int j = c.size() + 2; j <= c.size() + a.size() + 2 && !ok; j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:34:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | if(kmp[j] == c.size() && j - 2 * c.size() - 1 > uap) | ~~~~~~~^~~~~~~~~~~ main.cpp:34:63: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 34 | if(kmp[j] == c.size() && j - 2 * c.size() - 1 > uap) | ~~~~~~~~~~~~~~~~~~~~~^~~~~