Compilare: main.cpp: In function 'int main()': main.cpp:16:23: 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() + 3; i++) | ~~^~~~~~~~~~~~~~ main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (int i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:26:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | while (st >= 0 && dr <= s.size() - 1 && s[st] == s[dr]) | ~~~^~~~~~~~~~~~~~~ main.cpp:35:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | while (st >= 0 && dr <= s.size() - 1 && s[st] == s[dr]) | ~~~^~~~~~~~~~~~~~~ main.cpp:20:9: warning: array subscript -1 is below array bounds of 'int [5007]' [-Warray-bounds] 20 | d[-1] = 0; | ~~~~^ main.cpp:11:5: note: while referencing 'd' 11 | int d[LMAX]; | ^