Compilare: main.cpp: In function 'void _z()': main.cpp:24:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i = 1; i < s.size(); i ++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for(int i = 1; i < s.size(); i ++) | ~~^~~~~~~~~~ main.cpp:71:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for(int i = 1; i < s.size(); i ++) | ~~^~~~~~~~~~ main.cpp:73:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | if(i + z[i] == s.size() && mini[z[i]] + z[i] <= i) | ~~~~~~~~~^~~~~~~~~~~