Compilare: main.cpp: In function 'void zAlgorithm()': 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 = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:18:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(int i = 1; i < s.size(); i++) { | ~~^~~~~~~~~~ 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 | while(r < s.size() && s[r - l] == s[r]) | ~~^~~~~~~~~~ main.cpp:29:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | while(r < s.size() && s[r - l] == s[r]) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:48:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(int i = 1; i < s.size(); i++) { | ~~^~~~~~~~~~