Compilare: main.cpp: In function 'long long int hs(std::string, long long int)': main.cpp:13:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for(int i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'void hp(std::string, long long int)': main.cpp:23:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:85:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | for(int i = lenb; i <= a.size(); i++) | ~~^~~~~~~~~~~ main.cpp:53:9: warning: unused variable 'ha' [-Wunused-variable] 53 | int ha, hb, poz = 0, chb = 0, lenb = 0; | ^~