Compilare: main.cpp: In function 'int main()': main.cpp:15:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(int i = 0; i < s.size()+3; i++){ | ~~^~~~~~~~~~~~ main.cpp:19:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i = 0; i < s.size(); i++){ | ~~^~~~~~~~~~ main.cpp:21:29: 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(st >= 0 && dr <= s.size()-1 && s[st] == s[dr]){ | ~~~^~~~~~~~~~~~~ main.cpp:27:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while(st >= 0 && dr <= s.size()-1 && s[st] == s[dr]){ | ~~~^~~~~~~~~~~~~ main.cpp:18:9: warning: array subscript -1 is below array bounds of 'int [5010]' [-Warray-bounds] 18 | d[-1] = 0; | ~~~~^ main.cpp:7:5: note: while referencing 'd' 7 | int d[MAX]; | ^