Compilare: main.cpp: In function 'int main()': main.cpp:14:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i=0;i<x1.size();i++){ | ~^~~~~~~~~~ main.cpp:19:17: 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=1;i<s.size();i++){ | ~^~~~~~~~~ main.cpp:22:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | while(i+mana[i]+1<s.size() && i-mana[i]-1>=1 && s[i+mana[i]+1]== s[i-mana[i]-1]){ | ~~~~~~~~~~~^~~~~~~~~ main.cpp:29:26: 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(i+mana[i]+1<s.size() && i-mana[i]-1>=1 && s[i+mana[i]+1]==s[i-mana[i]-1]){ | ~~~~~~~~~~~^~~~~~~~~ main.cpp:37:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i=1;i<s.size();i++){ | ~^~~~~~~~~