Compilare: main.cpp: In function 'void calc_kmp()': 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 i = 2; i <= s.size(); i++){ | ~~^~~~~~~~~~~ main.cpp: In function 'int main()': 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 = 1; i <= s.size(); i++) | ~~^~~~~~~~~~~ main.cpp:27:19: 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()) ans++; | ~~~~~~~^~~~~~~~~~~ main.cpp:30:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int i = a.size() + 2; i <= s.size() && ans; i++) | ~~^~~~~~~~~~~ main.cpp:31:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | if(kmp[i] == a.size()) | ~~~~~~~^~~~~~~~~~~