Compilare: main.cpp: In function 'i64 comp_hash(std::string)': 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 < X.size(); i++) { | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:42:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(int i = 1; i <= A.size(); i++) { | ~~^~~~~~~~~~~ main.cpp:49:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int i = 0; i < B.size(); i++) { | ~~^~~~~~~~~~ main.cpp:51:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | if(i >= A.size()) { | ~~^~~~~~~~~~~ main.cpp:56:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | if(i >= A.size() - 1) { | ~~^~~~~~~~~~~~~~~